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 A059962 #5 Jul 31 2010 03:00:00 %S A059962 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,22,24,25,27,28,29 %N A059962 Duplicate of A057605. %K A059962 dead %O A059962 1,3