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 A059658 #2 May 01 2014 02:46:11 %S A059658 27,46,46,12,46,73,31,15,12,46,46,58,15,46,12,46,58,46,27,46,46,12,46, %T A059658 27,46,46,58,46,27,31,15,46,12,46,58,61,12,46,46,58,27,34,12,46,58,27, %U A059658 46,31,15,46,12,46,73,46,12,46,104,15,12,34,12,46,58,27,46,46,58,46,27 %N A059658 First differences of A059657. %K A059658 nonn %O A059658 1,1 %A A059658 _Antti Karttunen_, Feb 03 2001