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A072472 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. 1
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; refs; listen; history; internal format)
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: A136886 A191423 A195686 * A055814 A151370 A041567

Adjacent sequences:  A072469 A072470 A072471 * 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 February 14 16:53 EST 2012. Contains 205635 sequences.