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A131032 A097806 * A130296. 2

%I #14 Oct 11 2021 18:43:38

%S 1,3,1,5,2,1,7,2,2,1,9,2,2,2,1,11,2,2,2,2,1,13,2,2,2,2,2,1,15,2,2,2,2,

%T 2,2,1,17,2,2,2,2,2,2,2,1,19,2,2,2,2,2,2,2,2,1,21,2,2,2,2,2,2,2,2,2,1,

%U 23,2,2,2,2,2,2,2,2,2,2,1

%N A097806 * A130296.

%C Row sums give A008574.

%C A131033 = A130296 * A097806.

%F A097806 * A130296 as infinite lower triangular matrices. A097806 = the pairwise operator, A130296 = (1; 2,1; 3,1,1; ...).

%e First few rows of the triangle are:

%e 1;

%e 3, 1;

%e 5, 2, 1;

%e 7, 2, 2, 1;

%e 9, 2, 2, 2, 1;

%e 11, 2, 2, 2, 2, 1;

%e 13, 2, 2, 2, 2, 2, 1;

%e ...

%Y Cf. A008574, A097806, A130296, A131033.

%K nonn,tabl

%O 1,2

%A _Gary W. Adamson_, Jun 10 2007

%E Definition corrected and more terms from _Georg Fischer_, Oct 10 2021

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Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)