id:A088616 - OEIS Search Results

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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.

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0, 0, 24, 6840, 6568800 (list; graph; listen)

	OFFSET	`1,3`
	CROSSREFS	`Cf. A088310.` `Sequence in context: A003787 A002555 A002198 this_sequence A065142 A065236 A074657` `Adjacent sequences: A088613 A088614 A088615 this_sequence A088617 A088618 A088619`
	KEYWORD	`nonn`
	AUTHOR	`Yuval Dekel and Vladeta Jovovic, Nov 17 2003`
	EXTENSIONS	`What if you also ask that the two main diagonals are also distinct? - njas, Jan 03 2004.`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.