id:A158711 - OEIS Search Results

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Primes p such that p1=Floor[p/2]+p is prime and p2=Floor[p1/2]+p is prime.

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9

73, 233, 281, 409, 449, 569, 953, 1129, 1193, 1409, 1481, 2473, 2801, 3041, 3209, 3329, 3761, 3833, 3881, 4049, 4153, 5113, 5441, 6673, 7193, 9601, 9689, 10433, 10889, 11161, 11321, 11369, 11593, 11953, 12041, 12113, 12329, 12713, 12721 (list; graph; listen)

	OFFSET	`1,1`
	MATHEMATICA	`lst={}; Do[p=Prime[n]; If[PrimeQ[p=Floor[p/2]+p], If[PrimeQ[p=Floor[p/2]+p], AppendTo[lst, Prime[n]]]], {n, 7!}]; lst`
	CROSSREFS	`Cf. A158708, A158709, A158710` `Sequence in context: A142894 A141909 A142517 this_sequence A140039 A071392 A142434` `Adjacent sequences: A158708 A158709 A158710 this_sequence A158712 A158713 A158714`
	KEYWORD	`nonn`
	AUTHOR	`Vladimir Orlovsky (4vladimir(AT)gmail.com), Mar 24 2009`

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.

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