id:A127974 - OEIS Search Results

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Numerators in expansion of (1-x)^(-2/3).

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1, 2, 5, 40, 110, 308, 2618, 7480, 21505, 559130, 1621477, 4717024, 41273960, 120646960, 353323240, 3109244512, 9133405754, 26862958100, 711868389650, 2098138411600, 6189508314220 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`a(n)=denominator(n!/A008544(n)). Numerators of n!/A008544(n)) are A127975.`
	FORMULA	`a(n)=denominator(n!/product{k=0..n-1, 2+3k})`
	CROSSREFS	`Sequence in context: A109003 A120031 A110066 this_sequence A012801 A004096 A106885` `Adjacent sequences: A127971 A127972 A127973 this_sequence A127975 A127976 A127977`
	KEYWORD	`easy,nonn,frac`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Feb 09 2007`

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

AT&T Labs Research