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A089673 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 and the main anti-diagonal, are all distinct. 1
0, 0, 0, 652, 1658784 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

CROSSREFS

Cf. A088310, A088616, A089674.

Sequence in context: A204506 A204505 A188414 * A104823 A198170 A145125

Adjacent sequences:  A089670 A089671 A089672 * A089674 A089675 A089676

KEYWORD

nonn,more

AUTHOR

Vladeta Jovovic, Jan 04, 2004

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Last modified February 17 16:49 EST 2012. Contains 206058 sequences.