oanor
Iscriviti gratis
Mercata Prezzi Caratteristiche Accedi

API · /sequences-api

Number Sequences API

salutare 3,656 Abbonati

Generate famous integer sequences and test membership, with exact big-integer maths. The generate endpoint returns the first N terms of a sequence — Fibonacci, Lucas, prime numbers, triangular, square, cube, factorial, Catalan, pentagonal and tetrahedral numbers, plus parameterised arithmetic (a start and a step), geometric (a start and a ratio) and powers (any base). The contains endpoint tells you whether a given number belongs to a sequence — is 233 a Fibonacci number, is 21 triangular, is 97 prime, is 720 a factorial — using fast closed-form tests for primes, squares, cubes, triangular, pentagonal and Fibonacci numbers and an exact search for the rest, and it returns the term index where it is known. Because everything is computed with arbitrary-precision integers, terms beyond the usual floating-point limit are returned exactly as decimal strings and never overflow. It runs entirely locally, so it is instant, deterministic and private. Ideal for education and maths tooling, coding challenges and puzzles, test-data generation, recreational mathematics and number-theory experiments. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This generates and tests integer sequences; to factorize a single number or get its divisors use a number-theory API.

#sequences #fibonacci #primes #math #integers #developer-tools
api.oanor.com/sequences-api
Ottieni una chiave API Prova nel parco giochi → Contatta provider

Specifica leggibile dalle macchine, così gli agenti AI possono integrare questa API.

/api/sequences-api/openapi.json
/api/sequences-api/llms.txt

Individuazione: GET /api/index.json elenca ogni API.

API salute

salutare
Tempo di attività
100.00%
Sondaggi del server · 24 ore su 24
Latenza media
85 ms
Sondaggi del server · 24 ore su 24
Abbonati
3,656
attiva
Chiamate totali
57
ultimi 7 giorni
status Pagina di stato completa → · 9 sonde/24h

Prezzi

Scegli un livello: fatturazione mensile, annullamento in qualsiasi momento.

Free

Gratis

  • 2,835 chiamate/mese
  • 2 richieste/secondo
  • Tetto rigido (429 sopra la quota, nessuna eccedenza)
  • 2,835 llamadas/mes
  • 2 solicitudes/seg
  • 13 secuencias + membresía
  • Sin tarjeta de crédito
Accedi per abbonarti

Starter

€4.35 /mese

  • 12,350 chiamate/mese
  • 8 richieste/secondo
  • Tetto rigido (429 sopra la quota, nessuna eccedenza)
  • 12.35k llamadas/mes
  • 8 solicitudes/segundo
  • Términos exactos de enteros grandes
  • Soporte por correo electrónico
Accedi per abbonarti

Pro

€24.25 /mese

  • 174,500 chiamate/mese
  • 20 richieste/secondo
  • Tetto rigido (429 sopra la quota, nessuna eccedenza)
  • 174.5k calls/month
  • 20 req/sec
  • Education / puzzle / test-data pipelines
  • Priority support
Accedi per abbonarti

Mega

€62.25 /mese

  • 915,000 chiamate/mese
  • 50 richieste/secondo
  • Tetto rigido (429 sopra la quota, nessuna eccedenza)
  • 915k calls/month
  • 50 req/sec
  • Platform scale
  • Dedicated SLA
Accedi per abbonarti

Costruito da

P
PremiumApi

Correlato APIs

Altro APIs con tag sovrapposti.

Fibonacci Levels API

Automatische Fibonacci-Retracement- und Extension-Levels für jede Aktie, jeden Index, jedes FX-Paar, Rohstoff oder Kryptowährung, live aus Yahoo Finance-Kerzen berechnet, kein API-Key erforderlich. Fibonacci-Levels sind die Unterstützungs-/Widerstands-Karte, die Trader aus dem Swing-Hoch und Swing-Tief eines Trends zeichnen: Nach einer Bewegung tendiert der Preis dazu, auf die 38,2 %-, 50 %- oder 61,8 %-Retracement zurückzugehen, bevor er wieder ansteigt, und auf die 127,2 %-, 161,8 %- oder 261,8 %-Extension als Ziel zu projizieren. Dies findet automatisch den dominanten letzten Swing und legt die Levels fest, zusammen mit dem aktuellen Preisstand. Der Retracement-Endpunkt erkennt das Swing-Hoch und -Tief über ein Lookback-Fenster, ermittelt die Trendrichtung und gibt die Retracement-Levels (0, 23,6, 38,2, 50, 61,8, 78,6, 100 %) mit ihren Preisen zurück – plus die beiden Levels, zwischen denen der Preis aktuell liegt, und das nächstgelegene. Der Extension-Endpunkt gibt die Projektionsziele jenseits des Swings (127,2, 141,4, 161,8, 200, 261,8 %) in Trendrichtung zurück. Beide melden den Swing, aus dem sie erstellt wurden, damit Sie genau sehen, was gemessen wurde. Dies ist der Fibonacci-Levels-Cut – ein eigenständiges Preisniveau-Tool, getrennt von den Oszillator- und Kanalfeed-Indikatoren (RSI, MACD, Bollinger, SuperTrend, Keltner), von FX-Pivot-Punkten und vom Ichimoku-System. Die Levels sind im eigenen Preis des Instruments; der Swing wird mechanisch erkannt (höchstes Hoch / tiefstes Tief über das Fenster), nicht manuell ausgewählt. Intervall (1d/1wk/1mo) und Lookback sind konfigurierbar. Keyless, nichts wird über einen kurzen Cache hinaus gespeichert.

api.oanor.com/fibonacci-api

Number Theory API

An integer toolkit as an API. Factorize any number into its prime factors with exponents (and a readable 2^3 × 3^2 × 5 form), with the divisor count, the divisor sum, the full list of divisors and whether the number is perfect; find the greatest common divisor and least common multiple of two numbers (and whether they are coprime); and test primality, returning the next and previous prime. Handles numbers up to a trillion. Perfect for maths education and puzzles, cryptography demos, generating test data and any time you need the building blocks of a number. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. A focused integer toolkit, distinct from a general math-expression engine.

api.oanor.com/numbertheory-api

Combinatorics API

Combinatorics maths as an API, computed locally and deterministically with exact arbitrary-precision integers. The factorial endpoint computes n! = 1·2·3···n (with 0! = 1) and returns it exactly as a string together with its digit count, so even very large factorials stay precise. The permutations endpoint counts ordered arrangements: without repetition nPr = n!/(n−r)! arrangements of r items chosen from n, and with repetition n^r, where each of the r positions may be any of the n items. The combinations endpoint counts unordered selections: without repetition the binomial coefficient nCr = n!/(r!·(n−r)!), and with repetition (multisets) C(n+r−1, r), where repeats are allowed. All results are computed with BigInt so they are exact no matter how large, returned as a string with the number of digits and a floating-point approximation when it fits. n and r are non-negative integers up to 100000. Everything is computed locally and deterministically, so it is instant and private. Ideal for probability, statistics, lottery, game-design, cryptography and education app developers, counting and odds tools, and discrete-maths teaching. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is counting combinatorics; for modular arithmetic use a modular API and for descriptive statistics a statistics API.

api.oanor.com/combinatorics-api

Modular Arithmetic API

Modular-arithmetic maths as an API, computed locally and deterministically with exact big-integer arithmetic. The power endpoint computes modular exponentiation, aᵇ mod m, by square-and-multiply, fast and exact even for the huge exponents used in cryptography. The inverse endpoint finds the modular multiplicative inverse a⁻¹ mod m with the extended Euclidean algorithm, returning the inverse when a and m are coprime and reporting the gcd when no inverse exists. The totient endpoint computes Euler's totient φ(n) — the count of integers from 1 to n coprime to n — with the prime factorization it comes from, and an optional Euler-theorem check that a^φ(n) ≡ 1 (mod n) for a coprime base. These are the building blocks of RSA and much of modern cryptography. Inputs are integers and can be passed as strings for very large values. Everything is computed locally and deterministically, so it is instant and private. Ideal for cryptography, security, blockchain and mathematics app developers, RSA and number-theory tools, and computer-science education. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is modular arithmetic; for prime factorization and GCD use a number-theory API and for integer sequences a sequences API.

api.oanor.com/modular-api

Domande frequenti

Risposte rapide su prezzi, quote e integrazione.

Come ottengo una chiave API per Number Sequences API?
Registrati gratuitamente su oanor.com, genera una chiave API dalla dashboard sviluppatore e chiama Number Sequences API con l'header x-oanor-key. Nessuna carta di credito richiesta per il piano gratuito.
Qual è il limite di velocità di Number Sequences API?
Il piano gratuito consente 1 richiesta al secondo. I piani a pagamento arrivano fino a 50 richieste al secondo nel piano Mega. I limiti rigorosi restituiscono HTTP 429 oltre la quota — nessuna spesa imprevista.
Quanto costa Number Sequences API?
Number Sequences API ha un piano gratuito con 100 chiamate / mese. I piani a pagamento partono da €4.35 / mese con quote più alte e limiti di velocità più rapidi.
Posso cancellare l'abbonamento in qualsiasi momento?
Sì. I piani sono fatturati mensilmente e puoi cancellare in qualsiasi momento dalla dashboard di fatturazione. Nessun contratto a lungo termine e nessuna penale di cancellazione.
Number Sequences API è conforme al GDPR?
Tutte le richieste a Number Sequences API passano attraverso il nostro gateway in UE. La tua chiave upstream non lascia mai il nostro server e nessun dato personale viene condiviso con il fornitore upstream oltre alla richiesta inviata.

Scegli un endpoint dall'elenco a sinistra per visualizzarne i dettagli e provarlo.

Frammenti di codice

Iscriviti per ottenere una chiave API, quindi chiama qualsiasi percorso sotto il tuo slug.

curl https://api.oanor.com/sequences-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/sequences-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/sequences-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/sequences-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

Valutazioni

Accedi per votare.

Nessuna recensione ancora.

Discussione

Fai domande, condividi consigli, ricevi risposte dal provider e dagli altri sviluppatori. Pubblico — chiunque può leggere.

Accedi per scrivere o rispondere.

Accedi

Nuova discussione

/ 4000

📌 Fissato 🔒 Bloccato

·

· ·

/ 4000

🔒 Discussione bloccata — non si può più rispondere.

  • Nessuna discussione — inizia tu.

Supporto

Supporto privato 1:1 con il provider — fatturazione, integrazione, account. Solo tu e il team del provider vedete questi thread.

Accedi per aprire un ticket di supporto.

Accedi

Apri nuovo ticket

Descrivi cosa ti serve. Il team del provider riceve un'email e risponde sulla pagina del ticket.

  • Nessun ticket per questa API.

Abbonamento attivo: le chiamate possono iniziare subito.

Invia la tua prima richiesta —

Abbonamento attivo: copia uno snippet e avvia la tua prima chiamata.