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Search: id:A134313
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| A134313 |
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Numbers n such that n * Fibonacci(n) + 1 is prime. |
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+0
6
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| 1, 2, 3, 4, 9, 14, 15, 20, 24, 28, 30, 48, 54, 63, 108, 110, 116, 130, 148, 180, 189, 268, 315, 345, 394, 520, 528, 640, 808, 1070, 1112, 1590, 1744, 2530, 3630, 5640, 5778, 5938, 6795, 18160, 18858, 22444, 52160, 54621
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Some of the larger entries may only correspond to probable primes.
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MATHEMATICA
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a={}; Do[f=Fibonacci[n]; p=n*f+1; If[PrimeQ[p], AppendTo[a, n]], {n, 1, 10^3}]; a (Vladimir Orlovsky, Jul 22 2008)
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CROSSREFS
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Sequence in context: A027866 A100902 A034793 this_sequence A082981 A077906 A133993
Adjacent sequences: A134310 A134311 A134312 this_sequence A134314 A134315 A134316
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KEYWORD
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more,nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Jan 16 2008
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