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A098570 Least k such that Mersenne-prime(n)*P(k)# - 1 is prime with P(i)#=i-th Primorial. +0
2
1, 1, 1, 2, 1, 3, 1, 10, 9, 7, 9, 7, 36, 105, 375, 120, 280, 226, 1215, 263 (list; graph; listen)
OFFSET

1,4
CROSSREFS

Cf. A098571.

Sequence in context: A136179 A126761 A090559 this_sequence A122048 A046208 A006241

Adjacent sequences: A098567 A098568 A098569 this_sequence A098571 A098572 A098573

KEYWORD

more,nonn

AUTHOR

Pierre CAMI (pierrecami(AT)tele2.fr), Sep 16 2004

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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