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 A034016 #1 Dec 11 1999 03:00:00 %S A034016 0,0,0,0,0,0,1,1,3,10,31,228 %N A034016 Erroneous version of A001403. %K A034016 dead %O A034016 1,9