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A053286 Cototient of 2^n+1. 0
1, 1, 3, 1, 13, 17, 45, 1, 189, 225, 685, 257, 2733, 3841, 12969, 1, 43693, 75521, 174765, 61697, 731817, 848897, 2796205, 262145, 13304433, 14802689, 49449609, 15790337, 185023425, 313421825, 715827885, 6701057, 2957312961, 3551128577 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

FORMULA

a(n)=A051593[A000051(n)]

CROSSREFS

Cf. A000010, A000225, A051953.

Sequence in context: A133171 A133177 A184828 * A008826 A103440 A116483

Adjacent sequences:  A053283 A053284 A053285 * A053287 A053288 A053289

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Mar 03 2000

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.