This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A103494 #3 Jun 29 2008 03:00:00 %S A103494 191,171,0,3277,2731,28087,0,233017,432541,953251,699051 %N A103494 Erroneous version of A115016. %K A103494 dead %O A103494 2,1