id:A072472 - OEIS Search Results

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a(-1)=1, a(0) = 2; a(n) = product of numbers from p(n)+1 up to p(n+1), where p(n) is the n-th prime.

+0
2

1, 2, 3, 20, 42, 7920, 156, 57120, 342, 212520, 342014400, 930, 1673844480, 2430480, 1806, 4280760, 16529385600, 32441381280, 3660, 71852901120, 23319240, 5256, 200133133200, 44102880, 418397031360, 5827054819622400, 97990200, 10506 (list; graph; listen)

	OFFSET	`-1,2`
	MATHEMATICA	`a[n_] := Product[k, {k, Prime[n] + 1, Prime[n + 1]}]; a[0] = 2; Table[ a[n], {n, 0, 27}]`
	CROSSREFS	`Cf. A072470.` `Sequence in context: A154746 A042781 A136886 this_sequence A055814 A151370 A041567` `Adjacent sequences: A072469 A072470 A072471 this_sequence A072473 A072474 A072475`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jun 20 2002`
	EXTENSIONS	`Edited by Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 21 2002`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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