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 A085406 #4 May 11 2007 03:00:00 %S A085406 0,2,4,8,10,16,18,20,32,34,36,40,42,64,66,68,72,74,80,82,84,128,130, %T A085406 132 %N A085406 Duplicate of A022340. %K A085406 dead %O A085406 0,2