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A106086
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Primes p such that 7*p+2 and 2*p+7 are primes.
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0
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3, 5, 11, 23, 47, 53, 71, 131, 173, 197, 251, 257, 293, 317, 383, 461, 467, 587, 593, 683, 701, 773, 797, 863, 953, 983, 1031, 1103, 1151, 1187, 1193, 1217, 1301, 1307, 1373, 1451, 1481, 1607, 1721, 1787, 2111, 2207, 2237, 2333, 2633, 2903, 3023, 3221, 3347
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Cf. A105760 Numbers n such that (2*n + 7) is prime; A105772 Numbers n such that (7*n + 2) is prime
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MATHEMATICA
| Select[Prime[Range[220]], PrimeQ[2#+7]&&PrimeQ[7#+2]&]
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PROG
| (MAGMA) [p: p in PrimesUpTo(5000)|IsPrime(7*p+2) and IsPrime(2*p+7)] [From Vincenzo Librandi, Jan 30 2011]
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CROSSREFS
| Cf. A105760, A105772.
Sequence in context: A133914 A169913 A023223 * A072828 A032803 A030494
Adjacent sequences: A106083 A106084 A106085 * A106087 A106088 A106089
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KEYWORD
| nonn
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AUTHOR
| Zak Seidov (zakseidov(AT)yahoo.com), May 07 2005
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EXTENSIONS
| More terms from Rick L. Shepherd (rshepherd2(AT)hotmail.com), Jan 29 2006
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