id:A048617 - OEIS Search Results

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2*(n!)^2.

+0
3

2, 2, 8, 72, 1152, 28800, 1036800, 50803200, 3251404800, 263363788800, 26336378880000, 3186701844480000, 458885065605120000, 77551576087265280000, 15200108913103994880000, 3420024505448398848000000, 875526273394790105088000000, 253027093011094340370432000000 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`a(n) = order of automorphism group of complete bipartite graph K_{n,n} - Avi Peretz (njk(AT)netvision.net.il), Feb 21 2001`
	LINKS	`Eric Weisstein's World of Mathematics, Barbell Graph` `Eric Weisstein's World of Mathematics, Complete Bipartite Graph` `Eric Weisstein's World of Mathematics, Hamiltonian Path`
	MAPLE	`seq(mul(n!*k!, k=1..2), n=0..17); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jul 01 2007`
	CROSSREFS	`Equals 2 * A001044.` `Sequence in context: A053978 A003181 A009616 this_sequence A000615 A012413 A012659` `Adjacent sequences: A048614 A048615 A048616 this_sequence A048618 A048619 A048620`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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