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A089674 a(n) = number of n X n (0,1) matrices A such that the 2n+2 vectors consisting of the rows and the columns of the matrix A, as well as the main diagonal read in the upward direction and the main antidiagonal, are all distinct. 13
0, 0, 0, 1692, 2329280 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

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

CROSSREFS

Cf. A088310, A088616, A089673.

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: A251291 A120564 A237533 * A252429 A126720 A224605

Adjacent sequences:  A089671 A089672 A089673 * A089675 A089676 A089677

KEYWORD

nonn,more

AUTHOR

Vladeta Jovovic, Jan 04 2004

STATUS

approved

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Last modified April 21 04:56 EDT 2019. Contains 322310 sequences. (Running on oeis4.)