%I #6 Aug 14 2023 06:53:35
%S 1,2,1,4,0,1,4,2,0,1,8,0,0,0,1,4,4,2,0,0,1,12,0,0,0,0,0,1,8,4,0,2,0,0,
%T 0,1,12,0,4,0,0,0,0,0,1,8,8,0,0,2,0,0,0,0,1,20,0,0,0,0,0,0,0,0,0,1,8,
%U 4,4,4,0,2,0,0,0,0,0,1,24,0,0,0,0,0,0,0,0,0,0,0,1,12,12,0,0,0,0,2,0,0,0,0,0,0,1
%N Triangle read by rows, A054525 * A143315, 1<=k<=n.
%C Row sums = 2*n-1.
%C Left border = A140434: (1, 2, 4, 4, 8, 4, 12, 8,...).
%e First few rows of the triangle =
%e 1;
%e 2, 1;
%e 4, 0, 1;
%e 4, 2, 0, 1;
%e 8, 0, 0, 0, 1;
%e 4, 4, 2, 0, 0, 1;
%e 12, 0, 0, 0, 0, 0, 1;
%e 8, 4, 0, 2, 0, 0, 0, 1;
%e ...
%Y Cf. A054525, A140434, A143315.
%K nonn,tabl
%O 1,2
%A _Gary W. Adamson_, Aug 06 2008
%E a(19) corrected and more terms from _Georg Fischer_, Aug 14 2023