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%I #7 Mar 25 2022 02:29:47

%S 1,0,2,4,0,4,0,8,0,8,16,0,16,0,16,0,32,0,32,0,32,64,0,64,0,64,0,64,0,

%T 128,0,128,0,128,0,128,256,0,256,0,256,0,256,0,256,0,512,0,512,0,512,

%U 0,512,0,512

%N A130123 * A128174.

%C Row sums = A134353.

%F A130123 * A128174 as infinite lower triangular matrices.

%F Triangle read by rows: even n-th row = n+1 terms of (2^n, 0, 2^n, ...); odd n-th row = n+1 terms of (0, 2^n, 0, 2^n, ...).

%e First few rows of the triangle:

%e 1;

%e 0, 2;

%e 4, 0, 4;

%e 0, 8, 0, 8;

%e 16, 0, 16, 0, 16;

%e 0, 32, 0, 32, 0, 32;

%e ...

%Y Cf. A130123, A128174, A134353.

%K nonn,tabl

%O 0,3

%A _Gary W. Adamson_, Oct 21 2007