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 A133571 (A007318 * A133080 + A133080 * A007318) - A007318. 1

%I

%S 1,3,1,3,2,1,5,5,5,1,5,4,10,4,1,7,9,26,14,7,1,7,6,35,20,21,6,1,9,13,

%T 71,55,71,27,9,1,9,8,84,56,126,56,36,8,1,11,17,148,140,322,182,14844,

%U 11,1

%N (A007318 * A133080 + A133080 * A007318) - A007318.

%C Row sums = A133572: (1, 4, 6, 16, 24, 64, 96, 256,...).

%F (A007318 * A133080 + A133080 * A007318) - A007318, as infinite lower triangular matrices, where A133080 is an interpolation operator.

%e First few rows of the triangle are:

%e 1;

%e 3, 1;

%e 3, 2, 1;

%e 5, 5, 5, 1;

%e 5, 4, 10, 4, 1;

%e 7, 9, 26, 14, 7, 1;

%e 7, 6, 35, 20, 21, 6, 1;

%e 9, 13, 71, 55, 71, 27, 9, 1;

%e ...

%Y Cf. A133080, A133572.

%K nonn,tabl

%O 1,2

%A _Gary W. Adamson_, Sep 16 2007

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Last modified September 24 12:23 EDT 2021. Contains 347642 sequences. (Running on oeis4.)