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 A068213 #3 May 11 2007 03:00:00 %S A068213 5,7,8,9,10,11,12,14,18,22,23,46,47,59,83,94,107,118,166,167,179,214 %N A068213 Duplicate of A065966. %K A068213 dead %O A068213 1,1