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 A065351 #3 May 11 2007 03:00:00 %S A065351 5,14,27,41,44,65,76,90,109,125,139,152,155,169,186,189,203 %N A065351 Duplicate of A002503. %K A065351 dead %O A065351 0,1