A128521 - OEIS

%I #5 Feb 18 2022 22:19:31

%S 1,0,1,1,1,1,0,1,1,1,1,2,2,1,1,0,0,1,2,1,1,1,3,3,2,2,1,1,0,0,1,2,2,2,

%T 1,1,1,3,3,3,3,2,2,1,1,0,-1,1,2,2,3,2,2,1,1

%N A128174 * A054525 * A000012.

%C Row sums = A106477: (1, 1, 3, 3, 7, 5, 13, 9, 19, 13, ...). A128522 = A054525 * A128174 * A000012.

%F A128174 * A054525 * A000012 as infinite lower triangular matrices.

%e First few rows of the triangle:

%e   1;

%e   0, 1;

%e   1, 1, 1;

%e   0, 1, 1, 1;

%e   1, 2, 2, 1, 1;

%e   0, 0, 1, 2, 1, 1;

%e   1, 3, 3, 2, 2, 1, 1;

%e   0, 0, 1, 2, 2, 2, 1, 1;

%e   ...

%Y Cf. A128174, A054525, A000012, A106477, A128522.

%K tabl,sign

%O 1,12

%A _Gary W. Adamson_, Mar 07 2007