A015929 - OEIS

A015929

Positive integers n such that 2^n == 2^8 (mod n).

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

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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: A275692 A334267 A163823 * A331994 A043723 A376508

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