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A088232 Numbers n such that 3 does not divide phi(n). +0
2
1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 17, 20, 22, 23, 24, 25, 29, 30, 32, 33, 34, 40, 41, 44, 46, 47, 48, 50, 51, 53, 55, 58, 59, 60, 64, 66, 68, 69, 71, 75, 80, 82, 83, 85, 87, 88, 89, 92, 94, 96, 100, 101, 102, 106, 107, 110, 113, 115, 116, 118, 120, 121, 123, 125, 128 (list; graph; listen)
OFFSET

1,2

COMMENT

n such that the congruence x^3 == 1 mod(n) has only the trivial solution x=1 i.e. A060839(n) = 1 . Complement of sequence A066498.

CROSSREFS

Cf. A066498, A060839.

Sequence in context: A047424 A094942 A102705 this_sequence A070994 A057197 A067936

Adjacent sequences: A088229 A088230 A088231 this_sequence A088233 A088234 A088235

KEYWORD

nonn

AUTHOR

Yuval Dekel (dekelyuval(AT)hotmail.com), Nov 03 2003

EXTENSIONS

More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 05 2003

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.


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