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 A062842 #2 Mar 31 2012 10:26:36 %S A062842 0,1,1,2,1,1,1,3,2,2,1,2,1,1,1,4,3,3,2,3,2,2,1,3,2,2,3,2,2,2,1,5,4,4, %T A062842 3,4,3,3,2,4,3,3,2,3,2,2,1,4,3,3,2,3,2,3,2,3,2,2,1,2,1,1,2,6,5,5,4,5, %U A062842 4,4,3,5,4,4,3,4,3,3,2,5,4,4,3,4,3,3,3,4,3,3,2,3,2,2,1,5,4,4,3,4 %N A062842 Maximum number of zeros in the representation of n in any base. %e A062842 a[10]=2 since 10 in base 2 is 1010, containing 2 zeros %K A062842 base,easy,nonn %O A062842 1,4 %A A062842 _Erich Friedman_, Jul 21 2001