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 A016097 #5 Jan 09 2009 03:00:00 %S A016097 1,4,9,6,25,10,15,12,21,0,35,18,33,26,39,24,65,34,51,38,45,30,95,36 %N A016097 Erroneous version of A063507. %K A016097 dead %O A016097 1,2