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A089327 Smallest prime p such that 10*n*p +1 is prime. +0
1
3, 2, 2, 7, 2, 3, 3, 3, 2, 7, 3, 2, 7, 2, 5, 13, 11, 3, 3, 2, 2, 3, 2, 5, 3, 2, 2, 31, 5, 2, 37, 2, 2, 3, 2, 5, 7, 2, 3, 3, 2, 11, 3, 2, 5, 3, 2, 7, 3, 11, 2, 13, 2, 3, 7, 5, 5, 3, 2, 2, 3, 3, 13, 7, 2, 2, 3, 2, 2, 31, 3, 3, 13, 2, 3, 3, 3, 3, 3, 2, 2, 7, 29, 3, 3, 2, 2, 31, 3, 2, 3, 17, 2, 7, 2, 5, 7, 11 (list; graph; listen)
OFFSET

1,1

EXAMPLE

31,41,61,281, etc. are primes.

CROSSREFS

Sequence in context: A065474 A111702 A091029 this_sequence A091264 A021760 A092419

Adjacent sequences: A089324 A089325 A089326 this_sequence A089328 A089329 A089330

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 03 2003

EXTENSIONS

More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Sep 13 2005

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Last modified December 19 21:04 EST 2009. Contains 171054 sequences.


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