id:A139766 - OEIS Search Results

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A number n is included in the sequence if and only if the n-th integer from among those positive integers which are coprime to n+1 = the (n+1)-st integer from among those positive integers which are coprime to n.

+0
1

3, 15, 104, 164, 255, 2625, 2834, 11715, 18315, 48704, 49215, 64004, 65535, 73124, 131144, 215775, 491535, 525986, 546272, 568815, 952575, 1925564, 5781434, 5861583, 13496384, 14409548, 17646615, 17949434, 20171384, 21475124, 22632285 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`So far it appears that this is a proper subset of A001274.`
	LINKS	`Leroy Quet, Home Page (listed in lieu of email address)`
	FORMULA	`Indices n such that A126356(n) = A126357(n). - Chandler`
	CROSSREFS	`Cf. A001274, A069213, A126356, A126357.` `Sequence in context: A123184 A079486 A001274 this_sequence A003276 A136092 A145624` `Adjacent sequences: A139763 A139764 A139765 this_sequence A139767 A139768 A139769`
	KEYWORD	`nonn`
	AUTHOR	`Leroy Quet, Nov 07 2007`
	EXTENSIONS	`More terms from Stefan Steinerberger, Nov 07 2007` `a(8) onwards from Ray Chandler (rayjchandler(AT)sbcglobal.net), Jul 01 2009`

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

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