A074258 - OEIS

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A074258

Gaps between primes p such that 2p-1 is also prime.

1, 4, 12, 12, 6, 42, 18, 42, 18, 42, 12, 18, 42, 36, 24, 6, 30, 12, 60, 60, 48, 30, 24, 6, 12, 42, 30, 36, 84, 18, 48, 60, 30, 30 (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 A005382.` `Sequence in context: A084415 A156681 A063608 * A120213 A005886 A096442` `Adjacent sequences: A074255 A074256 A074257 * A074259 A074260 A074261`
	KEYWORD	`nonn`
	AUTHOR	`Jon Perry (perry(AT)globalnet.co.uk), Sep 20 2002`

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.