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 A024484 #5 May 11 2007 03:00:00 %S A024484 2,3,10,42,198,1001,5304,29070,163438,937365,5462730,32256120, %T A024484 192565800 %N A024484 Duplicate of A007226. %K A024484 dead %O A024484 2,1