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A138048
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Numbers n such that 15^n + 2 is prime.
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5
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0, 1, 2, 4, 5, 10, 11, 16, 20, 52, 75, 106, 112, 132, 371, 3264, 3424, 5477, 7516, 10365, 44557
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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COMMENTS
| No further terms < 100000. - Ray Chandler (rayjchandler(AT)sbcglobal.net), Aug 05 2011
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LINKS
| Henri & Renaud Lifchitz, PRP Records.
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MATHEMATICA
| Do[ f = 15^n + 2; If[ PrimeQ[ f ], Print[ {n, f} ] ], {n, 1, 371} ]
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CROSSREFS
| Cf. A051783 = Numbers n such that 3^n + 2 is prime. Cf. A087885 = Numbers n such that 5^n + 2 is prime. Cf. A090649, A109076, A113480, A138049, A138050, A138051, A087886, A113481.
Sequence in context: A003278 A004792 A167795 * A057762 A109511 A018339
Adjacent sequences: A138045 A138046 A138047 * A138049 A138050 A138051
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KEYWORD
| nonn,more
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AUTHOR
| Alexander Adamchuk (alex(AT)kolmogorov.com), Mar 02 2008
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EXTENSIONS
| {3264, 3424, 5477, 7516} from Ray Chandler (rayjchandler(AT)sbcglobal.net), Jul 30 2011
10365 found by Lelio R Paula, Dec 2006
44557 from Ray Chandler (rayjchandler(AT)sbcglobal.net), Jul 31 2011
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