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 A024911 #3 Jun 12 2004 03:00:00 %S A024911 2,4,8,12,14,18,20,22,30,34,42,44,48,54,58,60,64,68,70,82,84,90,92,98, %T A024911 102 %N A024911 Duplicate of A024906. %K A024911 dead %O A024911 1,1