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 A175665 #7 Mar 31 2012 14:00:56 %S A175665 1,1,4,2,1,2,9,3,2,1,2,4,2,3,16,4,3,2,2,2,1,2,3,6,2,2,2,6,3,4,25,5,4, %T A175665 3,3,2,2,2,3,3,2,1,2,2,2,3,4,8,3,2,4,2,2,2,3,9,3,3,3,8,4,5,36,6,5,4,4, %U A175665 3,3,3,3,3,2,2,2,2,2,3,4,4,3,2,2,2,1,2,3,3,2,2,2,3,3,4,5,10,4,3,6,2,2,2,6,3 %N A175665 The product of maximal run and minimal run lengths in the binary representation of n. %F A175665 a(n)=A043276(n)*A175597(n). %Y A175665 Cf. A175599. %K A175665 nonn,base %O A175665 1,3 %A A175665 _Juri-Stepan Gerasimov_, Aug 04 2010 %E A175665 Corrected by _D. S. McNeil_, Nov 26 2010