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A301369
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Numbers k such that (9^k + 7^k)/16 is prime.
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0
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OFFSET
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1,1
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COMMENTS
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All terms are prime.
The corresponding primes are 67, 79401467172644850007356716446663549450843749853576087044440771380676673442288169290888310265443988907, ...
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LINKS
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MAPLE
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select(n->isprime((9^n+7^n)/16), [seq(n, n=1..10000, 2)]); # Muniru A Asiru, Mar 27 2018
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MATHEMATICA
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Select[Range[1, 10000], PrimeQ[(9^n+7^n)/16] &]
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PROG
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(PARI) forprime(n=3, 10000, if(isprime((9^n+7^n)/16), print1(n, ", ")))
(Magma) [n: n in [1..10000] |IsPrime((9^n+7^n)/16)]
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CROSSREFS
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KEYWORD
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nonn,more,hard
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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