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A036259 Order of 2 mod n is odd. +0
3
1, 7, 23, 31, 47, 49, 71, 73, 79, 89, 103, 127, 151, 161, 167, 191, 199, 217, 223, 233, 239, 263, 271, 311, 329, 337, 343, 359, 367, 383, 431, 439, 463, 479, 487, 497, 503, 511, 529, 553, 599, 601, 607, 623, 631, 647, 713, 719, 721, 727, 743, 751 (list; graph; listen)
OFFSET

1,2

EXAMPLE

2^3 = 1 mod 7, 3 is odd, so 7 is in the sequence.

CROSSREFS

Cf. A036260, A053006.

Sequence in context: A095087 A144517 A091531 this_sequence A004628 A089199 A014663

Adjacent sequences: A036256 A036257 A036258 this_sequence A036260 A036261 A036262

KEYWORD

nonn

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.


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