A204981 - OEIS

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A204981

Least 2^(k-1) such that n divides 2^(k-1)-2^(j-1) for some j<k.

2

2, 4, 4, 8, 16, 8, 8, 16, 64, 32, 1024, 16, 4096, 16, 16, 32, 256, 128, 262144, 64, 64, 2048, 2048, 32, 1048576, 8192, 262144, 32, 268435456, 32, 32, 64, 1024, 512, 4096, 256, 68719476736, 524288, 4096, 128, 1048576, 128, 16384, 4096, 4096

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

For a guide to related sequences, see A204892.

LINKS

Table of n, a(n) for n=1..45.

MATHEMATICA

(See the program at A204979.)

CROSSREFS

Cf. A204932, A204979.

Sequence in context: A189696 A189196 A188747 * A267735 A189905 A189161

Adjacent sequences: A204978 A204979 A204980 * A204982 A204983 A204984

KEYWORD

nonn

AUTHOR

Clark Kimberling, Jan 21 2012

STATUS

approved