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A051171 A variation on A056223. 2
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 (list; graph; refs; listen; history; text; internal format)
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: A138123 A211868 A127372 * A300904 A318504 A318505

Adjacent sequences:  A051168 A051169 A051170 * A051172 A051173 A051174

KEYWORD

sign

AUTHOR

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

STATUS

approved

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Last modified October 23 15:13 EDT 2018. Contains 316528 sequences. (Running on oeis4.)