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A094398
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Numbers k that divide Lucas(k) + 1.
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3
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1, 2, 4, 8, 15, 16, 32, 64, 128, 256, 323, 368, 512, 736, 1024, 1472, 2048, 2944, 4096, 4879, 5655, 5888, 6479, 7055, 8192, 8464, 9879, 10815, 11663, 11776, 12935, 16384, 16928, 18407, 19043, 23407, 23552, 31535, 32768, 33856, 34943, 35207, 35296
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OFFSET
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1,2
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COMMENTS
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The powers of 2 (A000079) are in the sequence. - Michel Lagneau, Feb 09 2015
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LINKS
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Giovanni Resta, Table of n, a(n) for n = 1..1000
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MATHEMATICA
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Select[Range[40000], Divisible[LucasL[#]+1, #]&] (* Harvey P. Dale, Apr 13 2011 *)
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PROG
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(PARI) is(n)=(Mod([0, 1; 1, 1], n)^n*[2; 1])[1, 1]==-1 \\ Charles R Greathouse IV, Nov 04 2016
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CROSSREFS
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Cf. A000079, A000204, A005845, A094402.
Sequence in context: A039743 A070008 A033623 * A277728 A287163 A290652
Adjacent sequences: A094395 A094396 A094397 * A094399 A094400 A094401
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KEYWORD
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nonn
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AUTHOR
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Eric Rowland, May 01 2004
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STATUS
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approved
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