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 A066093 #3 May 11 2007 03:00:00 %S A066093 0,2,3,5,7,8,10,11,13,15,16,18,20,21,23,24,26,28,29,31,32,34,36,37,39 %N A066093 Duplicate of A022342. %K A066093 dead %O A066093 0,2