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Search: id:A085799
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A085799 Determinant of the symmetric n X n matrix A defined by A[i,j] = |i^2-j^2| for 1 <= i,j <= n. +0
1
0, -9, 240, -6300, 181440, -5821200, 207567360 (list; graph; listen)
OFFSET

1,2

MAPLE

(Conjectured to give the same sequence, apart from signs): a:=n->sum((count(Permutation(n*2-1), size=n+1)), j=0..n)/2: seq(a(n), n=1..16); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), May 03 2007

CROSSREFS

Cf. A085750.

Sequence in context: A165389 A153223 A157569 this_sequence A075127 A013733 A112028

Adjacent sequences: A085796 A085797 A085798 this_sequence A085800 A085801 A085802

KEYWORD

sign

AUTHOR

Yuval Dekel (dekelyuval(AT)hotmail.com), Jul 24 2003

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Last modified November 24 14:25 EST 2009. Contains 167438 sequences.


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