GET /{sequenceId}

oeis.org:oeis-api

Summary: Get sequence by ID
Operation ID: getSequenceById
Auth: unknown
Description

Retrieve a specific sequence by its OEIS ID (e.g., A000045 for Fibonacci numbers).

Parameters (2)

fmt (string, query, optional, default: json)

Response format

Constraints: {'enum': ['json', 'text']}

sequenceId (string, path, required)

OEIS sequence ID (e.g., A000045, A000040)

Constraints: {'pattern': '^[A-Z][0-9]{6}$'}

Examples (2)

TitleTypeURLAction
Get sequence by ID openapi-spec https://oeis.org/A000045
Get sequence by ID probe-gate https://oeis.org/A000045?fmt=json

Probe History

Latency

Status Codes

TimeStatusLatencySize
2026-03-23 10:25:05.485336 200 540ms
2026-03-23 09:49:20.398059 200 207ms

Response Changes

WhenOldNew
2026-03-23 10:25:05.485336 8b60175b3fdb e3b6121213a9