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%I #6 Mar 04 2022 02:05:42
%S 1,4,3,9,4,5,16,5,6,7,25,6,7,8,9,36,7,8,9,10,11,49,8,9,10,11,12,13,64,
%T 9,10,11,12,13,14,15,81,10,11,12,13,14,15,16,17,100,11,12,13,14,15,16,
%U 17,18,19
%N A000012 * A131843.
%C Row sums = A000566: (1, 7, 18, 34, 55, 81, ...), binomial transform of (1, 6, 5, 0, 0, 0, ...).
%C A131894 = A131843 * A000012.
%F A000012 * A131843 as infinite lower triangular matrices.
%e First few rows of the triangle:
%e 1;
%e 4, 3;
%e 9, 4, 5;
%e 16, 5, 6, 7;
%e 25, 6, 7, 8, 9;
%e 36, 7, 8, 9, 10, 11;
%e 49, 8, 9, 10, 11, 12, 13;
%e 64, 9, 10, 11, 12, 13, 14, 15;
%e ...
%Y Cf. A131843, A000566.
%K nonn,tabl
%O 1,2
%A _Gary W. Adamson_, Jul 24 2007