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Triangle read by rows: A054521 * A128407.
0

%I #5 Feb 18 2022 22:18:14

%S 1,1,0,1,-1,0,1,0,-1,0,1,-1,-1,0,0,1,0,0,0,-1,0,1,-1,-1,0,-1,1,0,1,0,

%T -1,0,-1,0,-1,0,1,-1,0,0,-1,0,-1,0,0,1,0,-1,0,0,0,-1,0,0,0

%N Triangle read by rows: A054521 * A128407.

%C Row sums = A112399: (1, 1, 0, 0, -1, 0, -1, -2, -2, -1, ...).

%F A054521 * A128407 as infinite lower triangular matrices.

%e First few rows of the triangle:

%e 1;

%e 1, 0;

%e 1, -1, 0;

%e 1, 0, -1, 0;

%e 1, -1, -1, 0, 0;

%e 1, 0, 0, 0, -1, 0;

%e 1, -1, -1, 0, -1, 1, 0;

%Y Cf. A054521, A128407, A112399, A008683.

%K tabl,sign

%O 1,1

%A _Gary W. Adamson_, Mar 03 2007