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 A090330 #3 Mar 30 2012 18:50:42 %S A090330 0,0,0,1,0,1,0,2,0,2,0,3,0,1,1,3,0,3,0,3,1,2,0,5,0,1,1,3,0,4,0,4,0,2, %T A090330 0,6,0,2,1,5,0,4,0,3,2,2,0,7,0,3,1,3,0,5,1,5,1,1,0,7,0,1,2,5,0,4,0,4, %U A090330 0,4,0,8,0,2,1,4,0,5,0,7,1,2,0,7,1,2,1,5,0,6,0,3,1,2,1,9,0,2,1,5,0,5 %N A090330 Number of divisors >1 of n that are prefixes of other divisors of n in binary representation. %C A090330 a(n) = A090329(n) - 1. %Y A090330 Cf. A090332, A090334, A090331. %K A090330 nonn %O A090330 1,8 %A A090330 _Reinhard Zumkeller_, Nov 26 2003