---
title: Encyclopaedia of integer sequences
date: "2002-04-16T12:00:00Z"
categories:
  - links
wp_id: 1362
description: "I found the On-Line Encyclopedia of Integer Sequences, a massive database for looking up number patterns. Surprisingly, it couldn't find the simplest sequence imaginable: 1, 2, 3, 4, 5, 6."
keywords: [oeis, integer sequences, mathematics, number theory, database, pattern recognition]
---

[Encyclopaedia of integer sequences](http://www.research.att.com/~njas/sequences/). Funny, it couldn't find "1,2,3,4,5,6..." though.