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Search: id:A086218
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| A086218 |
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Primes p such that 3^p-2 is prime. |
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+0
3
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OFFSET
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1,1
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MATHEMATICA
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f[n_]:=3^n-2; lst={}; Do[p=Prime[n]; If[PrimeQ[f[p]], Print[p]; AppendTo[lst, p]], {n, 7!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jul 17 2009]
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CROSSREFS
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Cf. A086214.
Sequence in context: A086832 A111491 A163499 this_sequence A138658 A067464 A081545
Adjacent sequences: A086215 A086216 A086217 this_sequence A086219 A086220 A086221
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KEYWORD
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nonn,hard,more
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AUTHOR
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Cino Hilliard (hillcino368(AT)gmail.com), Aug 28 2003
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EXTENSIONS
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2521 from Jorge Coveiro (jorgecoveiro(AT)yahoo.com), Apr 10 2004
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