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 A035836 #4 Jul 19 2005 03:00:00 %S A035836 1,110,3080,40370,322190,1815506,7925720,28512110,88206140,241925530 %N A035836 Duplicate of A008395. %K A035836 dead %O A035836 0,2