%0 Journal Article %T The On-Line Encyclopedia of Integer Sequences %A N. J. A. Sloane %J Mathematics %D 2003 %I arXiv %X This article gives a brief introduction to the On-Line Encyclopedia of Integer Sequences (or OEIS). The OEIS is a database of nearly 90,000 sequences of integers, arranged lexicographically. The entry for a sequence lists the initial terms (50 to 100, if available), a description, formulae, programs to generate the sequence, references, links to relevant web pages, and other information. %U http://arxiv.org/abs/math/0312448v1