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%I #4 Feb 20 2022 14:53:19
%S 1,2,1,4,1,1,6,2,1,1,10,2,1,1,1,12,4,2,1,1,1,18,4,2,1,1,1,1,22,6,2,2,
%T 1,1,1,1,28,6,4,2,1,1,1,1,1,32,10,4,2,2,1,1,1,1,1
%N A000012 * A054523.
%C Row sums = the triangular series, A000217: (1, 3, 6, 10, ...).
%C Left column = A002088: (1, 2, 4, 6, 10, 12, 18, ...).
%F A000012 * A054523 as infinite lower triangular matrices.
%e First few rows of the triangle:
%e 1;
%e 2, 1;
%e 4, 1, 1;
%e 6, 2, 1, 1;
%e 10, 2, 1, 1, 1;
%e 12, 4, 2, 1, 1, 1;
%e 18, 4, 2, 1, 1, 1, 1;
%e ...
%Y Cf. A000012, A054523, A000217.
%K nonn,tabl
%O 1,2
%A _Gary W. Adamson_, May 21 2007
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