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 A083467 #3 May 11 2007 03:00:00 %S A083467 2,2,6,4,20,6,28,8,288,20,22,24,26,28,60,48,68,288,228,20,42,22,46,24 %N A083467 Duplicate of A061807. %K A083467 dead %O A083467 1,1