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 A097524 #3 Jan 09 2009 03:00:00 %S A097524 3,5,3,3,7,3,3,3,7,3,5,5,7,3,3,3,13,5,3,7,3,5,7,3,3,31,5,13,5,3,3,7,3, %T A097524 3 %N A097524 Duplicate of A073703. %K A097524 dead %O A097524 1,1