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A118995 Number of real n X n symmetric (+1,-1) matrices with positive permanent. 3
1, 4, 32, 592, 11904, 1192384, 134217728 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
CROSSREFS
Sequence in context: A219149 A013041 A006024 * A222829 A134087 A132854
KEYWORD
nonn,more
AUTHOR
Giovanni Resta, May 08 2006
STATUS
approved

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Last modified July 17 10:03 EDT 2024. Contains 374375 sequences. (Running on oeis4.)