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A088616 a(n) = number of n X n (0,1) matrices A such that the 2n vectors consisting of the rows and the columns of the matrix A are all distinct. 13
0, 0, 24, 6840, 6568800 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
CROSSREFS
Cf. A088310.
Binary matrices with distinct rows and columns, various versions: A059202, A088309, A088310, A088616, A089673, A089674, A093466, A094000, A094223, A116532, A116539, A181230, A259763
Sequence in context: A266312 A181232 A275054 * A158042 A297049 A147860
KEYWORD
nonn,more
AUTHOR
Yuval Dekel and Vladeta Jovovic, Nov 17 2003
EXTENSIONS
What if you also ask that the two main diagonals are also distinct? - N. J. A. Sloane, Jan 03 2004.
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)