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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; internal format)
OFFSET

1,14

MAPLE

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

CROSSREFS

Sequence in context: A055945 A138123 A127372 * A166445 A085919 A105824

Adjacent sequences:  A051168 A051169 A051170 * A051172 A051173 A051174

KEYWORD

sign

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), James Sellers, Aug 22 2000

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Last modified February 15 17:45 EST 2012. Contains 205833 sequences.