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 A082619 #4 Jan 09 2009 03:00:00 %S A082619 1,2,6,66,858,6006,222222,22444422,244868442,6434774346 %N A082619 Duplicate of A046399. %K A082619 dead %O A082619 0,2