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A093794
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Numbers n such that 8^n+7^(n-1) is prime.
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8
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2, 14, 30, 56, 96, 192, 200, 462, 540, 1400, 2756
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| 14 is a member since 814+712 = 4494935521511 which is a prime number.
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MATHEMATICA
| Do[ If[ PrimeQ[8^n + 7^(n - 1)], Print[n]], {n, 4000}]
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CROSSREFS
| Cf. A082103, A093717, A093793, A093765, A096185, A093794, A093795, A096186.
Sequence in context: A057018 A038341 A075718 * A075490 A031301 A202638
Adjacent sequences: A093791 A093792 A093793 * A093795 A093796 A093797
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KEYWORD
| nonn
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AUTHOR
| Herman H. Rosenfeld (herm3(AT)pacbell.net), May 18 2004
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EXTENSIONS
| More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 18 2004
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