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 A033094 #7 Nov 15 2012 04:25:32
%S A033094 0,1,2,5,7,10,11,16,21,26,29,35,37,40,43,51,56,65,70,78,83,87,89,98,
%T A033094 103,108,115,124,129,137,139,150,159,167,175,188,194,201,207,218,223,
%U A033094 232,235,242,250,255,258,271,278,288,296,305,310
%N A033094 Number of 0's when k is written in base b for all b and k satisfying 2<=b<=n+1, 1<=k<=n.
%t A033094 f[n_] := Count[ Flatten@ Table[ IntegerDigits[k, b], {k, n}, {b, 2, n + 1}], 0]; Array[f, 53] (* _Robert G. Wilson v_, Nov 14 2012 *)
%Y A033094 Cf. A033093, A033096, A033098, A033100, A033102, A033104, A033106, A033108, A033110, A033112.
%K A033094 nonn,base
%O A033094 1,3
%A A033094 _Clark Kimberling_