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 A094055 #2 Nov 10 2007 03:00:00 %S A094055 1,1,2,3,6,9,14,21 %N A094055 Duplicate of A094056. %K A094055 dead %O A094055 1,3