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Search: id:A093794
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| A093794 |
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Numbers n such that 8^n+7^(n-1) is prime. |
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+0
8
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| 2, 14, 30, 56, 96, 192, 200, 462, 540, 1400, 2756
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OFFSET
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1,1
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EXAMPLE
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14 is a member since 814+712 = 4494935521511 which is a prime number.
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MATHEMATICA
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Do[ If[ PrimeQ[8^n + 7^(n - 1)], Print[n]], {n, 4000}]
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CROSSREFS
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Cf. A093452, A093717, A093793, A093765, A096185, A093794, A093795, A096186.
Sequence in context: A057018 A038341 A075718 this_sequence A075490 A031301 A083015
Adjacent sequences: A093791 A093792 A093793 this_sequence A093795 A093796 A093797
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KEYWORD
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nonn
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AUTHOR
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Herman H. Rosenfeld (herm3(AT)pacbell.net), May 18 2004
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 18 2004
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