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 A208129 #9 Apr 03 2012 15:06:36 %S A208129 32,31,33,31,32,31,34,31,32,31,33,31,32,31,35,4,27,32,31,33,31,32,31, %T A208129 34,31,32,31,33,31,32,31,36,4,27,32,31,33,31,32,31,34,31,32,31,33,31, %U A208129 32,31,35,4,27,32,31,33,31,32,31,34,31,32,31,33,31,32,31,37,4,27 %N A208129 First differences of A208128. %Y A208129 Cf. A210255, A208128. %K A208129 nonn %O A208129 1,1 %A A208129 _Vladimir Shevelev_, Mar 29 2012