id:A036260 - OEIS Search Results

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n mod ord2(n) is even, where ord2(n) = order of 2 mod n.

+0
2

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; listen)

	OFFSET	`0,1`
	COMMENT	`These are all composite since for prime p, ord2(p) \| phi(p) = p-1, whence p mod ord2(p) = 1.`
	CROSSREFS	`Cf. A036259.` `Sequence in context: A031642 A054830 A031552 this_sequence A043444 A127489 A054831` `Adjacent sequences: A036257 A036258 A036259 this_sequence A036261 A036262 A036263`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.

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