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 A108790 #4 Sep 08 2013 13:30:44 %S A108790 2,1,5,2,1,1,3,1,4,3,1,3,1,3,1,2,2,2,2,1,1,1,1,4,2,2,2,2,1,4,1,5,4,1, %T A108790 4,1,4,1,4,1 %N A108790 Sequence of run lengths in A108788. %Y A108790 Cf. A108787, A108788, A108789. %K A108790 nonn,easy %O A108790 1,1 %A A108790 _Philippe Deléham_, Jul 09 2005