A088616 - OEIS

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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

Table of n, a(n) for n=1..5.

CROSSREFS

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

Adjacent sequences: A088613 A088614 A088615 * A088617 A088618 A088619

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