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%I #14 Apr 02 2022 08:20:23
%S 1,1,1,2,2,1,4,4,4,1,9,9,9,7,1,21,21,21,21,11,1,51,51,51,51,46,16,1,
%T 127,127,127,127,127,92,22,1,323,323,323,323,323,309,169,29,1,835,835,
%U 835,835,835,835,709,289,37,1
%N Triangle read by rows: A107131 * A000012.
%C Row sums = A005773 starting (1, 2, 5, 13, 35, 96, 267, ...).
%C Leftmost column = A001006: (1, 1, 2, 4, 9, 21, 51, ...).
%C A136788 = A000012 * A107131.
%F A107131 * A000012 as infinite lower triangular matrices.
%e First few rows of the triangle:
%e 1;
%e 1, 1;
%e 2, 2, 1;
%e 4, 4, 4, 1;
%e 9, 9, 9, 7, 1;
%e 21, 21, 21, 21, 11, 1;
%e 51, 51, 51, 51, 46, 16, 1;
%e 127, 127, 127, 127, 127, 92, 22, 1;
%e ...
%Y Cf. A005773, A001006, A136788.
%K nonn,tabl
%O 1,4
%A _Gary W. Adamson_, Jan 21 2008
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