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A015929 Positive integers n such that 2^n == 2^8 (mod n). 7
1, 2, 4, 6, 8, 12, 14, 16, 20, 24, 32, 40, 48, 56, 60, 64, 80, 88, 96, 104, 120, 127, 128, 136, 140, 152, 160, 184, 192, 224, 232, 240, 248, 256, 260, 272, 296, 308, 320, 328, 344, 376, 384, 408, 416, 424, 472, 480 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The odd terms are given by A215611.

For all m, 2^A051447(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^# - 2^8, #] == 0 &] (* T. D. Noe, Aug 17 2012 *)

CROSSREFS

Contains A208156 as a subsequence.

Cf. A015919, A015921, A015922, A015924, A015925, A015926, A015927, A015931, A015932, A015935, A015937.

Sequence in context: A091065 A275692 A163823 * A043723 A006998 A043726

Adjacent sequences:  A015926 A015927 A015928 * A015930 A015931 A015932

KEYWORD

nonn

AUTHOR

Robert G. Wilson v

EXTENSIONS

Edited by Max Alekseyev, Jul 30 2011

STATUS

approved

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Last modified October 18 13:26 EDT 2019. Contains 328161 sequences. (Running on oeis4.)