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 A015924 Positive integers n such that 2^n == 16 (mod n). 11
 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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Odd terms are given by A033984. For all m, 2^A128121(m)-1 belongs to this sequence. LINKS T. D. Noe, Table of n, a(n) for n = 1..1000 OEIS Wiki, 2^n mod n MATHEMATICA 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 *) CROSSREFS 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 KEYWORD nonn AUTHOR EXTENSIONS Edited and terms 1,2,4,6,7,8,12,16 prepended by Max Alekseyev, Jul 29 2011 STATUS approved

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Last modified March 24 09:33 EDT 2023. Contains 361470 sequences. (Running on oeis4.)