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 A105724 #2 May 11 2007 03:00:00 %S A105724 4,4,4,2,8,8,2,9,3,8,1,5,8,3,6,6,2,4,7,0,1,5,8,8,0,9,9,0,0,6,0,6,9,3,6 %N A105724 Duplicate of A063448. %K A105724 dead %O A105724 1,1