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 A084036 #3 Nov 10 2007 03:00:00 %S A084036 10,43,51,55,58,60,136,171,204,213,214,222,270,288,309,334,339,364,366 %N A084036 Duplicate of A092117. %K A084036 dead %O A084036 1,1