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%I #4 Feb 18 2022 22:30:54
%S 1,3,2,4,0,3,7,5,0,4,6,0,0,0,5,12,6,7,0,0,6,8,0,0,0,0,0,7,15,10,0,9,0,
%T 0,0,8,13,0,8,0,0,0,0,0,9,18,8,0,0,11,0,0,0,0,10
%N A051731 * A129234.
%C Left border = Sigma(n), A000203: (1, 3, 4, 7, 6, 12, 8, ...). A129236 = Moebius transform of A129234.
%F A051731 * A129234 as infinite lower triangular matrices.
%e First few rows of the triangle:
%e 1;
%e 3, 2;
%e 4, 0, 3;
%e 7, 5, 0, 4;
%e 6, 0, 0, 0, 5;
%e 12, 6, 7, 0, 0, 6;
%e 8, 0, 0, 0, 0, 0, 7;
%e 15, 10, 0, 9, 0, 0, 0, 8;
%e ...
%Y Cf. A129234, A129235, A129236, A054525, A051731, A000203.
%K nonn,tabl
%O 1,2
%A _Gary W. Adamson_, Apr 05 2007
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