%I #11 May 29 2023 13:03:21
%S 1,3,0,4,1,0,7,0,1,0,6,1,1,1,0,12,2,0,0,1,0,8,1,1,1,1,1,0,15,0,3,0,1,
%T 0,1,0,13,4,0,1,1,0,1,1,0,18,2,3,2,0,0,1,0,1,0,12,1,1,1,1,1,1,1,1,1,0,
%U 28,4,3,0,3,0,1,0,0,0,1,0,14,1,1,1,1,1,1,1,1,1,1,1,0
%N Triangle A126988 * A054521, as infinite lower triangular matrices.
%C Left column gives A000203.
%C Row sums give A018804.
%e First few rows of the triangle are:
%e 1;
%e 3, 0;
%e 4, 1, 0;
%e 7, 0, 1, 0;
%e 6, 1, 1, 1, 0;
%e 12, 2, 0, 0, 1, 0;
%e 8, 1, 1, 1, 1, 1, 0;
%e ...
%Y Cf. A000203, A018804, A054521, A126988.
%K nonn,tabl
%O 1,2
%A _Gary W. Adamson_, Jan 12 2007
%E a(17) = 2 inserted and more terms from _Georg Fischer_, May 29 2023