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Search: id:A161469
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| A161469 |
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Primes of the form 3^k+2^k-k^3+k^2. |
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+0
2
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| 5, 17, 613, 129266611, 7625731683761, 150094704016430497, 2503155504994422192936289397051173, 4638397686588101984398752568803509060305779468709
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OFFSET
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1,1
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COMMENT
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The associated k are 1,3,6,17,27,36,70,102,237,377,463,576,639,683,... [R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 12 2009]
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MATHEMATICA
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lst={}; Do[If[PrimeQ[p=(3^n+2^n)-(n^3-n^2)], AppendTo[lst, p]], {n, 6!}]; lst
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CROSSREFS
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Cf. A058765, A082101, A161470.
Sequence in context: A081479 A096996 A070294 this_sequence A119531 A085832 A062223
Adjacent sequences: A161466 A161467 A161468 this_sequence A161470 A161471 A161472
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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 10 2009
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EXTENSIONS
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Definition simplified by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 12 2009
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