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A036260 n mod ord2(n) is even, where ord2(n) = order of 2 mod n. 1
2921, 3017, 3473, 3479, 5767, 5969, 6167, 6377, 6497, 6913, 7223, 7519, 7567, 7751, 9017, 9271, 10199, 10447, 11431, 11929, 12719, 13439, 13609, 14513, 16583, 17009, 17143, 18631, 18809, 19313, 20737, 21119, 22337, 22351, 22537 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

These are all composite since for prime p, ord2(p) | phi(p) = p-1, whence p mod ord2(p) = 1.

LINKS

Table of n, a(n) for n=0..34.

CROSSREFS

Cf. A036259.

Sequence in context: A054830 A031552 A205253 * A180651 A180331 A043444

Adjacent sequences:  A036257 A036258 A036259 * A036261 A036262 A036263

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified November 27 15:41 EST 2014. Contains 250224 sequences.