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A089144
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Primes p such that 6*p-5 and 6*p-1 are primes.
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5
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2, 3, 7, 17, 19, 47, 53, 59, 67, 103, 113, 127, 157, 239, 269, 283, 313, 379, 383, 397, 449, 467, 577, 613, 617, 647, 823, 829, 907, 929, 977, 1097, 1123, 1279, 1373, 1447, 1489, 1523, 1697, 1723, 1789, 1877, 1933, 2017, 2027, 2063, 2069, 2237, 2339, 2423
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| 6*7=42, 42-5=37, 42-1=41, 37 and 41 primes
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MATHEMATICA
| okQ[n_]:=Module[{x=6n}, PrimeQ[x-1]&&PrimeQ[x-5]]; Select[Prime[Range[ 500]], okQ] (* From Harvey P. Dale, May 25 2011 *)
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CROSSREFS
| Cf. A090606, A090607, A090608, A090609, A090610.
Sequence in context: A174359 A160513 A154431 * A045332 A045333 A040141
Adjacent sequences: A089141 A089142 A089143 * A089145 A089146 A089147
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KEYWORD
| base,easy,nonn
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AUTHOR
| Pierre CAMI (colettecami(AT)aol.com), Dec 05 2003
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EXTENSIONS
| More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 06 2003
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