A128436 - OEIS

A128436

Primes p such that 2p - 3 and 2p - 1 are twin primes.

3, 7, 31, 37, 97, 157, 211, 331, 547, 577, 661, 727, 811, 937, 967, 1171, 1297, 1627, 2011, 2131, 2137, 2467, 2551, 2617, 3067, 3181, 3331, 3391, 3607, 4111, 4507, 4621, 4861, 5167, 5431, 5581, 5851, 6037, 6121, 6271, 6841, 6967, 7297, 7681, 7867, 8317

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OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

MATHEMATICA

Select[Prime[Range[1000]], PrimeQ[2# - 1] && PrimeQ[2# - 3] &] (* Ray Chandler, May 11 2007 *)

PROG

(Magma) [ p: p in PrimesUpTo(9000) | IsPrime(2*p-3) and IsPrime(2*p-1)] // Vincenzo Librandi, Jan 29 2011

CROSSREFS

Cf. A001097, A005382.

Sequence in context: A359702 A217198 A110581 * A213899 A034915 A145479

Adjacent sequences: A128433 A128434 A128435 * A128437 A128438 A128439

KEYWORD

nonn

AUTHOR

Zak Seidov, Mar 03 2007

STATUS

approved