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A015924
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Positive integers n such that 2^n == 16 (mod n).
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11
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1, 2, 4, 6, 7, 8, 12, 16, 20, 24, 28, 40, 44, 48, 52, 60, 68, 76, 80, 92, 112, 116, 120, 124, 148, 154, 164, 172, 188, 204, 208, 212, 236, 240, 244, 264, 268, 280, 284, 292, 316, 332, 340, 356, 364, 388, 404, 412, 428, 436, 452, 508, 520, 524, 548, 556, 596
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OFFSET
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1,2
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COMMENTS
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Odd terms are given by A033984.
For all m, 2^A128121(m)-1 belongs to this sequence.
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LINKS
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T. D. Noe, Table of n, a(n) for n = 1..1000
OEIS Wiki, 2^n mod n
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MATHEMATICA
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Select[Range[1000], Mod[2^# - 2^4, #] == 0 &] (* T. D. Noe, Aug 17 2012 *)
Join[{1, 2, 4, 6, 7, 8, 12, 16}, Select[Range[600], PowerMod[2, #, #]==16&]] (* Harvey P. Dale, Dec 03 2021 *)
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CROSSREFS
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Contains A050992 as a subsequence.
Cf. A033984, A173138.
Sequence in context: A358458 A014855 A298479 * A096750 A088458 A177866
Adjacent sequences: A015921 A015922 A015923 * A015925 A015926 A015927
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KEYWORD
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nonn
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AUTHOR
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Robert G. Wilson v
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EXTENSIONS
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Edited and terms 1,2,4,6,7,8,12,16 prepended by Max Alekseyev, Jul 29 2011
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STATUS
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approved
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