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 A037434 #6 Feb 27 2009 03:00:00 %S A037434 1,2,3,4,5,68,122,246,397,425,513,625,696,970,1062,1167,1215,1244,1251 %N A037434 Duplicate of A033170. %K A037434 dead %O A037434 1,2