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%I #7 Apr 02 2022 09:25:39
%S 1,2,1,3,0,1,5,2,0,1,7,1,0,0,1,11,3,2,0,0,1,15,2,1,0,0,0,1,22,6,1,2,0,
%T 0,0,1,30,5,3,1,0,0,0,0,1,42,9,2,1,2,0,0,0,0,1,56,9,3,1,1,0,0,0,0,0,1,
%U 77,16,6,3,1,2,0,0,0,0,0,1
%N Triangle read by rows, A026794 * A051731.
%C Left border = A000041 starting with offset 1: (1, 2, 3, 5, 7, 11, 15, ...).
%C Row sums = A137640: (1, 3, 4, 8, 9, 17, 19, ...).
%F A026794 * A051731 as infinite lower triangular matrices.
%e First few rows of the triangle:
%e 1;
%e 2, 1;
%e 3, 0, 1;
%e 5, 2, 0, 1;
%e 7, 1, 0, 0, 1;
%e 11, 3, 2, 0, 0, 1;
%e 15, 2, 1, 0, 0, 0, 1;
%e 22, 6, 1, 2, 0, 0, 0, 1;
%e 30, 5, 3, 1, 0, 0, 0, 0, 1;
%e ...
%Y Cf. A000041, A137640, A026794, A051731.
%K nonn,tabl
%O 1,2
%A _Gary W. Adamson_, Jan 31 2008
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