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 A038495 #3 May 11 2007 03:00:00 %S A038495 0,1,1,2,3,5,8,14,24,43,77,140,256,472,874,1628,3045,5719,10780,20388 %N A038495 Duplicate of A007059. %K A038495 dead %O A038495 0,4