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%I
%S 0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,2,1,2,1,2,1,
%T 2,1,2,1,3,1,2,2,2,1,3,1,2,2,3,1,3,1,3,2,2,1,4,1,3,2,3,1,3,2,3,2,2,1,
%U 6,1,2,2,3,2,4,1,3,2,4,1,5,1,2,3,3,2,4,1,5,3
%N Number of 9's when n is written in base b for 2<=b<=n+1.
%t f[n_] := Count[Flatten@ Table[ IntegerDigits[n, b], {b, 2, n + 1}], 9]; Array[f, 90](* _Robert G. Wilson v_, Nov 14 2012 *)
%Y Cf. A033093, A033095, A033097, A033099, A033101, A033103, A033105, A033107, A033109, A033112.
%K nonn,base
%O 1,29
%A _Clark Kimberling_
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