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 A088681 #3 May 11 2007 03:00:00 %S A088681 2,2,2,6,6,2,6,2,4,6,6,4,4,4,4,2,2,6,6,2,2,2,12,2,6,10,6,2,4,10,4,4,6, %T A088681 2 %N A088681 Duplicate of A078584. %K A088681 dead %O A088681 0,1