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A015929
Positive integers n such that 2^n == 2^8 (mod n).
9
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
OFFSET
1,2
COMMENTS
The odd terms are given by A215611.
For all m, 2^A051447(m)-1 belongs to this sequence.
LINKS
MATHEMATICA
Select[Range[1000], Mod[2^# - 2^8, #] == 0 &] (* T. D. Noe, Aug 17 2012 *)
CROSSREFS
Contains A208156 as a subsequence.
Sequence in context: A275692 A334267 A163823 * A331994 A043723 A376508
KEYWORD
nonn
EXTENSIONS
Edited by Max Alekseyev, Jul 30 2011
STATUS
approved