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Search: id:A088672
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| A088672 |
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Number of n X n (0,1)-matrices with zero permanent. |
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+0
7
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OFFSET
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1,2
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REFERENCES
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C. J. Everett and P. R. Stein, The asymptotic number of (0,1)-matrices with zero permanent, Disc. Math. 6 (1973), 29-34.
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LINKS
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Index entries for sequences related to binary matrices
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FORMULA
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a(n) is asymptotic to n(2^(n^2-n+1)). - Everett and Stein.
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CROSSREFS
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Cf. A089479, A089482.
Adjacent sequences: A088669 A088670 A088671 this_sequence A088673 A088674 A088675
Sequence in context: A117051 A003387 A081059 this_sequence A028456 A119408 A012234
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KEYWORD
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nonn,more
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AUTHOR
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Michael Somos, Oct 03 2003
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EXTENSIONS
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a(5) from Jaap Spies, Nov 02 2003. a(6) from Gordon Royle, Nov 03, 2003.
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