A128410 A128408 * A000012.

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, -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

Offset

1,2

Comments

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.

Links

Table of n, a(n) for n=1..55.

Formula

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

Example

First few rows of the triangle:
   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, -1, -1;
  ...

Crossrefs

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

Sequence in context: A094645 A105793 A158566 * A059782 A093654 A342627

Adjacent sequences: A128407 A128408 A128409 * A128411 A128412 A128413

Keyword

tabl,sign

Author

Gary W. Adamson, Mar 01 2007

Status

approved