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A257773 Number of numbers k, 0 <= k <= 9, such that n is a Belgian-k number. 6

%I

%S 1,2,2,2,2,2,2,2,2,2,10,10,7,6,4,4,4,4,3,2,5,7,5,4,3,3,3,3,2,2,4,5,4,

%T 4,2,3,3,2,2,2,3,4,4,3,3,3,2,1,2,1,2,3,2,3,3,2,2,2,2,1,2,2,3,3,2,1,2,

%U 2,1,2,2,3,3,2,2,2,1,2,1,1,2,3,2,2,2,1

%N Number of numbers k, 0 <= k <= 9, such that n is a Belgian-k number.

%C See A106039 for definition of Belgian-k numbers.

%C row lengths in A257770;

%C a(A257785(n)) = 1;

%C For n > 1: a(A007088(n)) = 10.

%H Reinhard Zumkeller, <a href="/A257773/b257773.txt">Table of n, a(n) for n = 0..10000</a>

%o (Haskell)

%o a257773 = length . a257770_row

%Y Cf. A106039, A257770, A257785, A007088.

%K nonn

%O 0,2

%A _Reinhard Zumkeller_, May 08 2015

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Last modified February 26 17:04 EST 2021. Contains 341632 sequences. (Running on oeis4.)