id:A064352 - OEIS Search Results

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

+0
1

1, 3, 30, 504, 11880, 360360, 13366080, 586051200, 29654190720, 1700755056000, 109027350432000, 7725366544896000, 599555620984320000, 50578512186237235200, 4608264443634948096000 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`K. A. Penson and A. I. Solomon, Coherent states from combinatorial sequences.`
	FORMULA	`Integral representation as n-th moment of a positive function on a positive half-axis, in Maple notation: a(n)= int(x^nexp(-2x/27)(BesselK(1/3, 2x/27)+BesselK(2/3, 2x/27))(sqrt(3)/(27*Pi)), x=0..infinity), n=0, 1...`
	CROSSREFS	`Sequence in context: A058831 A007004 A012003 this_sequence A080527 A092677 A007019` `Adjacent sequences: A064349 A064350 A064351 this_sequence A064353 A064354 A064355`
	KEYWORD	`nonn`
	AUTHOR	`Karol A. Penson (penson(AT)lptl.jussieu.fr), Sep 19 2001`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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