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A074259 Gaps between primes p such that 2p+1 is also prime. 0
1, 2, 6, 12, 6, 12, 12, 30, 6, 24, 18, 42, 6, 12, 42, 6, 12, 30, 12, 66, 60, 12, 12, 48, 18, 84, 48, 12, 6, 24, 36, 24, 18, 48, 102, 42 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

PROG

(PARI) lsgp=0; forprime (p=2, 1000, if (isprime(2*p+1), write("primegap.txt", p-lsgp); lsgp=p))

CROSSREFS

First differences of A005384.

Sequence in context: A205103 A165822 A014965 * A113540 A111658 A105692

Adjacent sequences:  A074256 A074257 A074258 * A074260 A074261 A074262

KEYWORD

nonn

AUTHOR

Jon Perry (perry(AT)globalnet.co.uk), Sep 20 2002

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Last modified February 16 01:31 EST 2012. Contains 205860 sequences.