id:A006587 - OEIS Search Results

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3*2^(2*n)*(3*n)!/((2*n)!*n!).

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3, 36, 720, 16128, 380160, 9225216, 228114432, 5715394560, 144599482368, 3685869158400, 94513444945920, 2435255516528640, 62999001405849600, 1635260233414606848, 42568679092062781440, 1110895735754245275648 (list; graph; listen)

	OFFSET	`0,1`
	REFERENCES	`W. A. Whitworth, DCC Exercises in Choice and Chance, Stechert, NY, 1945, p. 35.`
	CROSSREFS	`Adjacent sequences: A006584 A006585 A006586 this_sequence A006588 A006589 A006590` `Sequence in context: A055303 A068177 A099670 this_sequence A091482 A121245 A122220`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.

AT&T Labs Research