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A084402 n-th partial product - 1 is a prime, where a(n) >1. +0
4
3, 2, 2, 2, 2, 4, 2, 3, 6, 4, 5, 5, 5, 10, 4, 3, 5, 8, 22, 13, 14, 2, 5, 5, 2, 20, 9, 9, 24, 5, 26, 15, 14, 25, 25, 4, 9, 30, 9, 21, 12, 11, 10, 2, 40, 19, 8, 13, 11, 50, 3, 25, 25, 8, 5, 25, 46, 19, 47, 54, 9, 13, 14, 43, 4, 24, 28, 16, 33, 25, 152, 2, 11, 22, 6, 78, 87, 7, 10, 21, 77, 23 (list; graph; listen)
OFFSET

1,1

EXAMPLE

3-1= 2, 3*2-1=5, 3*2*2 -1=11 etc. are primes.

CROSSREFS

Cf. A084401.

Sequence in context: A122396 A037199 A145376 this_sequence A127599 A085034 A119323

Adjacent sequences: A084399 A084400 A084401 this_sequence A084403 A084404 A084405

KEYWORD

nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 31 2003

EXTENSIONS

More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Dec 22 2004

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.


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