The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A088672 Number of n X n (0,1)-matrices with zero permanent. 9
 0, 1, 9, 265, 27713, 10363361, 13906734081, 68121583929729 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Table of n, a(n) for n=0..7. C. J. Everett and P. R. Stein, The asymptotic number of (0,1)-matrices with zero permanent, Disc. Math. 6 (1973), 29-34. Index entries for sequences related to binary matrices FORMULA a(n) is asymptotic to n*(2^(n^2 - n + 1)). [Everett and Stein] a(n) = A002416(n) - A227414(n). - Geoffrey Critzer, Dec 19 2023 MATHEMATICA a[ n_] := Count[Table[Permanent[Partition[a, n]], {a, Tuples[{0, 1}, n^2]}], 0]; (* Michael Somos, Aug 05 2018 *) CROSSREFS Cf. A089479, A089482, A227414. Sequence in context: A144684 A191960 A168600 * A300169 A157571 A202689 Adjacent sequences: A088669 A088670 A088671 * A088673 A088674 A088675 KEYWORD nonn,more,hard AUTHOR Michael Somos, Oct 03 2003 EXTENSIONS a(5) from Jaap Spies, Nov 02 2003 a(6) from Gordon F. Royle, Nov 03 2003 a(7) added by Geoffrey Critzer, Dec 19 2023 after Noam Zeilberger in A227414. a(0)=0 prepended by Alois P. Heinz, Dec 19 2023 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified July 17 08:49 EDT 2024. Contains 374360 sequences. (Running on oeis4.)