A128410 - OEIS

%I #5 Feb 18 2022 22:17:12

%S 1,-2,-1,-2,-1,-1,0,0,0,0,-2,-1,-1,-1,-1,4,3,2,1,1,1,-2,-1,-1,-1,-1,

%T -1,-1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4,3,2,2,2,1,1,1,1,1

%N A128408 * A000012.

%C Left border = A008966: (1, -2, -2, 0, -2, 4, -2, 0, 0, 4, ...). Row sums = A063441: (1, -3, -4, 0, -6, 12, ...) A128409 = A000012 * A128408.

%F A128408 * A000012 as infinite lower triangular matrices. Partial row sums of A128408 starting from the right.

%e First few rows of the triangle:

%e    1;

%e   -2, -1;

%e   -2, -1, -1;

%e    0,  0,  0,  0;

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

%e    4,  3,  2,  1,  1,  1;

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

%e   ...

%Y Cf. A128407, A128408, A128409, A008966, A051731, A063441.

%K tabl,sign

%O 1,2

%A _Gary W. Adamson_, Mar 01 2007