id:A049308 - OEIS Search Results

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Sextuple factorial numbers: product[ k=0..n-1 ] (6*k+4).

+0
5

1, 4, 40, 640, 14080, 394240, 13404160, 536166400, 24663654400, 1282510028800, 74385581670400, 4760677226905600, 333247405883392000, 25326802847137792000, 2076797833465298944000, 182758209344946307072000 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`E.g.f. (1-6x)^(-2/3).` `a(n) = 2^nA008544(n).`
	CROSSREFS	`Cf. A008544, A011781, A008543.` `Sequence in context: A128573 A052675 A090359 this_sequence A005431 A010792 A064422` `Adjacent sequences: A049305 A049306 A049307 this_sequence A049309 A049310 A049311`
	KEYWORD	`nonn,easy`
	AUTHOR	`Joe Keane (jgk(AT)jgk.org)`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

AT&T Labs Research