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%I #2 Mar 30 2012 17:25:20
%S 1,3,1,6,2,1,10,3,2,1,15,4,3,2,1,21,5,4,3,2,1,28,6,5,4,3,2,1,36,7,6,5,
%T 4,3,2,1
%N A000012 * A130296.
%C Row sums = n^2. A130303 = A130296 * A000012.
%F A000012 * A130296 as infinite lower triangular matrices. Triangular series as the left border; (1,2,3...) in all other columns.
%e First few rows of the triangle are:
%e 1;
%e 3, 1;
%e 6, 2, 1;
%e 10, 3, 2, 1;
%e 15, 4, 3, 2, 1;
%e 21, 5, 4, 3, 2, 1;
%e ...
%Y Cf. A130296, A130303.
%K nonn,tabl
%O 1,2
%A _Gary W. Adamson_, May 20 2007
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