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 A070836 #4 May 11 2007 03:00:00 %S A070836 1,11,10,111,11,10,1111,100,11,10,11111,101,12,11,10,111111,110,20,12 %N A070836 Duplicate of A063432. %K A070836 dead %O A070836 1,2