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A118999 Number of real n X n symmetric (+1,-1) matrices with negative permanent. 2
0, 0, 32, 240, 11904, 533568, 134217728 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

CROSSREFS

Cf. A118997, A118995.

Sequence in context: A160061 A199913 A060622 * A111450 A070332 A111442

Adjacent sequences:  A118996 A118997 A118998 * A119000 A119001 A119002

KEYWORD

nonn,more

AUTHOR

Giovanni Resta (g.resta(AT)iit.cnr.it), May 08 2006

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Last modified February 14 17:38 EST 2012. Contains 205647 sequences.