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A081858 Numbers n such that (2n+1) divides (2^n-1). 0
0, 3, 8, 11, 15, 20, 23, 35, 36, 39, 44, 48, 51, 56, 63, 68, 75, 83, 95, 96, 99, 111, 116, 119, 120, 128, 131, 135, 140, 155, 156, 168, 170, 176, 179, 183, 191, 200, 204, 215, 216, 219, 224, 228, 231, 239, 243, 251, 260, 280, 284, 288, 296, 299, 300, 303, 308 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

FORMULA

n such that A002326(n)=n

CROSSREFS

Cf. A014664.

Sequence in context: A020680 A051245 A003157 * A145837 A111132 A188473

Adjacent sequences:  A081855 A081856 A081857 * A081859 A081860 A081861

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 11 2003

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Last modified February 16 13:30 EST 2012. Contains 205909 sequences.