%I
%S 1,1,2,0,0,3,1,2,0,4,0,0,0,0,5,0,0,3,0,0,6,0,0,0,0,0,0,7,1,2,0,4,0,0,
%T 0,8,0,0,0,0,0,0,0,0,9,0,0,0,0,5,0,0,0,0,10,0,0,0,0,0,0,0,0,0,0,11,0,
%U 0,3,0,0,6,0,0,0,0,0,12
%N Triangle by rows, A115361 * A127648
%C row sums = A129527: (1, 3 3, 7, 5, 9, 7, 15,...)
%F Let A = the ruler function triangle A115361 as an infinite lower triangular matrix, and B = A127648 (a triangle with the natural numbers as the main diagonal and the rest zeros).
%F The triangle = A*B, as infinite lower triangular matrices.
%e First few rows of the triangle =
%e 1
%e 1, 2
%e 0, 0, 3
%e 1, 2, 0, 4
%e 0, 0, 0, 0, 5
%e 0, 0, 3, 0, 0, 6
%e 0, 0, 0, 0, 0, 0, 7
%e 1, 2, 0, 4, 0, 0, 0, 8
%e 0, 0, 0, 0, 0, 0, 0, 0, 9
%e 0, 0, 0, 0, 5, 0, 0, 0, 0, 10
%e 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11
%e 0, 0, 3, 0, 0, 6, 0, 0, 0, 0, 0, 12
%e ...
%Y Cf. A115361, A127648, A129527
%K tabl,nonn
%O 1,3
%A _Gary W. Adamson_, Mar 19 2011
