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%I #2 Mar 30 2012 17:25:28
%S 1,4,1,7,1,1,13,4,1,1,16,4,1,1,1,25,7,4,1,1,1,28,7,4,1,1,1,1,38,13,4,
%T 4,1,1,1,1,44,13,7,4,1,1,1,1,1,53,16,7,4,4,1,1,1,1,1,56,16,7,4,4,1,1,
%U 1,1,1,1
%N A000012 * A051731^3.
%C Row sums = A061202: (1, 5, 9, 19, 23, 39,...).
%C Leftmost column = A061201: (1, 4, 7, 13, 16, 25, 28,...).
%F A000012 * A051731^3 as infinite lower triangular matrices, where A000012 = [1; 1,1; 1,1,1;...] and A051731 = the inverse Mobius transform.
%e First few rows of the triangle are:
%e 1;
%e 4, 1;
%e 7, 1, 1;
%e 13, 4, 1, 1;
%e 16, 4, 1, 1, 1;
%e 25, 7, 4, 1, 1, 1;
%e 28, 7, 4, 1, 1, 1, 1;
%e 38, 13, 4, 4, 1, 1, 1, 1;
%e ...
%Y Cf. A051731, A061202, A061201.
%K nonn,tabl
%O 1,2
%A _Gary W. Adamson_, May 24 2008
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