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 A088321 #5 Jan 09 2009 03:00:00 %S A088321 1,2,16,4096,4294967296,1208925819614629174706176 %N A088321 Duplicate of A061301. %K A088321 dead %O A088321 0,2