id:A058527 - OEIS Search Results

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Number of 2n X 2n 0-1 matrices with n ones in each row and each column.

+0
3

1, 2, 90, 297200, 116963796250, 6736218287430460752, 64051375889927380035549804336, 108738182111446498614705217754614976371200 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`Vladeta Jovovic (vladeta(AT)eunet.rs), Nov 12 2006, Table of n, a(n) for n = 0..15` `B. D. McKay, 0-1 matrices with constant row and column sums`
	CROSSREFS	`A diagonal of triangle in A008300. Cf. A001499, A001501.` `Sequence in context: A024239 A076532 A157064 this_sequence A138583 A024240 A116162` `Adjacent sequences: A058524 A058525 A058526 this_sequence A058528 A058529 A058530`
	KEYWORD	`nonn`
	AUTHOR	`David desJardins (david(AT)desjardins.org), Dec 22 2000`
	EXTENSIONS	`More terms (using dynamic programming in Python) from Greg Kuperberg (greg(AT)math.ucdavis.edu), Feb 08 2001` `More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Nov 12 2006`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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