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%I #4 Feb 20 2022 14:55:04
%S 1,4,1,12,4,1,32,12,4,1,80,32,12,4,1,192,80,32,12,4,1,448,192,80,32,
%T 12,4,1,1024,448,192,80,32,12,4,1,2304,1024,448,192,80,32,12,4,1
%N A130321^2.
%C Row sums = A000337: (1, 5, 17, 49, 129, 321, ...).
%F The square of triangle A130321 as an infinite lower triangular matrix.
%F A001787 in every column starting (1, 4, 12, 32, 80, 192, ...).
%e First few rows of the triangle:
%e 1;
%e 4, 1;
%e 12, 4, 1;
%e 32, 12, 4, 1;
%e 80, 32, 12, 4, 1;
%e 192, 80, 32, 12, 4, 1;
%e ...
%Y Cf. A130321, A001787, A000337.
%K nonn,tabl
%O 0,2
%A _Gary W. Adamson_, May 24 2007
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