A051171 A variation on A056223.

1, -1, 1, 0, -1, 0, 0, 1, 1, -1, 0, 1, -1, -3, 0, 3, -1, -1, 0, 0, 1, -1, -2, 3, 2, -4, 0, 4, -2, -3, 3, 7, -10, 3, 22, 29, -33, 22, 31, 31, 9, -10, -15, 24, 23, 15, -8, 8, 25, -75, 50, 38, -3, -26, -29, 2, 63, -191, 162, -171, -352, -397, -15, 685, 532, 67, -43, -44, 32, 172

Offset

1,14

Links

Table of n, a(n) for n=1..70.

Maple

with(combinat): f := (i, j) -> numbpart(i+j-1): A051171 := n->det(matrix(n, n, f));

Crossrefs

Sequence in context: A211868 A127372 A350950 * A336118 A342639 A300904

Adjacent sequences: A051168 A051169 A051170 * A051172 A051173 A051174

Keyword

sign

Author

N. J. A. Sloane, James A. Sellers, Aug 22 2000

Status

approved