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%I #8 Mar 20 2022 22:55:51

%S 1,2,1,4,2,1,6,4,4,1,9,6,11,4,1,12,9,24,11,6,1,16,12,46,24,22,6,1,20,

%T 16,80,46,62,22,8,1,25,20,130,80,148,62,37,8,1,30,25,200,130,314,148,

%U 128,37,10,1

%N A128174 * A007318 * A133080.

%C Row sums = 2^n - 1, A000225: (1, 3, 7, 15, 31, ...).

%F A128174 * A007318 * A133080 as infinite lower triangular matrices.

%e First few rows of the triangle:

%e 1;

%e 2, 1;

%e 4, 2, 1;

%e 6, 4, 4, 1;

%e 9, 6, 11, 4, 1;

%e 12, 9, 24, 11, 6, 1;

%e 16, 12, 46, 24, 22, 6, 1;

%e 20, 16, 80, 46, 62, 22, 8, 1;

%e ...

%Y Cf. A133080, A007318, A128174, A000225.

%K nonn,tabl

%O 1,2

%A _Gary W. Adamson_, Sep 14 2007