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A222265
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Numbers n such that (13^n + 2^n)/15 is prime.
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2
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OFFSET
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1,1
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COMMENTS
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All terms are prime.
a(10) > 10^5.
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LINKS
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Table of n, a(n) for n=1..9.
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MATHEMATICA
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Select[Prime[Range[1, 100000]], PrimeQ[(13^# + 2^#)/15]&]
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PROG
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(PARI) forprime(p=3, 10^6, if(ispseudoprime((13^p + 2^p)/15), print1(p, ", ") ) ); \\ Joerg Arndt, Jul 29 2013
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CROSSREFS
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Cf. A125956, A125957, A057159, A128071, A213176.
Sequence in context: A055899 A218956 A139876 * A107392 A054497 A235593
Adjacent sequences: A222262 A222263 A222264 * A222266 A222267 A222268
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KEYWORD
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nonn,hard,more
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AUTHOR
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Robert Price, May 05 2013
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EXTENSIONS
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Removed incorrect first term of "2".
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STATUS
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approved
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