A001451 - OEIS

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A001451

(5*n)!/((3*n)!*n!*n!).

1, 20, 1260, 100100, 8817900, 823727520, 79919739900, 7962100660800, 808906548235500, 83426304143982800, 8707404737345073760, 917663774856743842200, 97491279924241456098300 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	LINKS	`Vincenzo Librandi, Table of n, a(n) for n = 0..90`
	MAPLE	`f := n->(5n)!/((3n)!n!n!);`
	PROG	`(MAGMA) [Factorial(5n)/(Factorial(3n)Factorial(n)Factorial(n)): n in [0..30]]; // Vincenzo Librandi, May 22 2011`
	CROSSREFS	`Sequence in context: A042745 A158912 A036067 * A093598 A174581 A153469` `Adjacent sequences: A001448 A001449 A001450 * A001452 A001453 A001454`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 15 09:35 EST 2012. Contains 205753 sequences.