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%I #4 Feb 20 2022 01:40:22
%S 1,1,1,3,0,1,3,2,0,1,6,0,1,0,1,4,3,1,1,0,1,10,0,0,0,1,0,1,6,4,1,1,0,1,
%T 0,1,12,0,2,0,0,0,1,0,1,8,6,0,1,1,0,0,1,0,1
%N A129686 * A054523.
%C Row sums = A004277, 1 followed by even terms: (1, 2, 4, 6, 8, 10, ...).
%F A129686 * A054523 as infinite lower triangular matrices, where A129686 = the alternate term operator.
%e First few rows of the triangle:
%e 1;
%e 1, 1;
%e 3, 0, 1;
%e 3, 2, 0, 1;
%e 6, 0, 1, 0, 1;
%e 4, 3, 1, 1, 0, 1;
%e 10, 0, 0, 0, 1, 0, 1;
%e 6, 4, 1, 1, 0, 1, 0, 1;
%e ...
%Y Cf. A129686, A054523, A004277.
%K nonn,tabl
%O 1,4
%A _Gary W. Adamson_, May 02 2007
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