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 A088507 #3 May 11 2007 03:00:00 %S A088507 1,5,2,4,19,6,16,26,3,18,23,28,10,15,20,25,61,7,12,35,17,22,76,27,45 %N A088507 Duplicate of A050001. %K A088507 dead %O A088507 1,2