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 A175599 #6 Mar 31 2012 14:00:56 %S A175599 0,0,0,1,0,1,0,2,1,0,1,0,1,2,0,3,2,1,1,1,0,1,2,1,1,1,1,1,2,3,0,4,3,2, %T A175599 2,1,1,1,2,2,1,0,1,1,1,2,3,2,2,1,0,1,1,1,2,0,2,2,2,2,3,4,0,5,4,3,3,2, %U A175599 2,2,2,2,1,1,1,1,1,2,3,3,2,1,1,1,0,1,2,2,1,1,1,2,2,3,4,3,3,2,1,1,1,1,1,2,1 %N A175599 The difference between maximal run length and minimal run length in binary representation of n. %F A175599 a(n)=A043276(n)-A175597(n). %K A175599 nonn,base %O A175599 1,8 %A A175599 _Juri-Stepan Gerasimov_, Jul 23 2010 %E A175599 Terms checked by _D. S. McNeil_, Nov 26 2010