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 A088255 #3 May 11 2007 03:00:00 %S A088255 4,6,30,420,2310,43890,1138830,17160990,300690390,17100553470 %N A088255 Duplicate of A075590. %K A088255 dead %O A088255 1,1