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Search: id:A161558
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| A161558 |
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Primes of form 2^k+3^k-4. |
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+0
1
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| 31, 271, 2311, 94151567431, 847322163871, 450284043329950831, 239299329793567483011391, 13915193059764305948125655305497609574930528737031
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OFFSET
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1,1
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COMMENT
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Generated by k = 3, 5, 7, 23, 25, 37, 49, 103, 149, 211,....
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MATHEMATICA
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lst={}; Do[If[PrimeQ[p=2^n+3^n-4], AppendTo[lst, p]], {n, 6!}]; lst
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CROSSREFS
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Cf. A082101
Sequence in context: A125368 A126526 A008386 this_sequence A156094 A115151 A001298
Adjacent sequences: A161555 A161556 A161557 this_sequence A161559 A161560 A161561
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KEYWORD
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nonn
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AUTHOR
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Vladimir Orlovsky (4vladimir(AT)gmail.com), Jun 13 2009
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EXTENSIONS
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Comment added by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 04 2009
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