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A118989 Number of symmetric n X n (0,1)-matrices over the reals with zero permanent. +0
3
1, 3, 25, 271, 6881, 254911, 20903681 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Cf. A086906, A088672, A118991.

Sequence in context: A009042 A080896 A126746 this_sequence A123989 A001907 A143635

Adjacent sequences: A118986 A118987 A118988 this_sequence A118990 A118991 A118992

KEYWORD

nonn,more

AUTHOR

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

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Last modified December 13 23:45 EST 2009. Contains 170824 sequences.

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