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 A049607 #5 May 11 2007 03:00:00 %S A049607 0,1,5,26,138,743,4043,22180,122468,679757,3789297,21199998,118973550 %N A049607 Duplicate of A035029. %K A049607 dead %O A049607 0,3