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A120842

a(n) = the (number of positive divisors of n)th positive integer which is coprime to n.

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1, 3, 2, 5, 2, 11, 2, 7, 4, 9, 2, 17, 2, 9, 7, 9, 2, 17, 2, 13, 5, 7, 2, 23, 3, 7, 5, 13, 2, 29, 2, 11, 5, 7, 4, 25, 2, 7, 5, 19, 2, 25, 2, 13, 11, 7, 2, 29, 3, 13, 5, 11, 2, 23, 4, 17, 5, 7, 2, 43, 2, 7, 10, 13, 4, 25, 2, 11, 5, 23, 2, 35, 2, 7, 11, 11, 4, 25, 2, 23, 7, 7, 2, 41, 4, 7, 5, 17, 2 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Leroy Quet, Home Page (listed in lieu of email address)`
	EXAMPLE	`12 has 6 positive divisors. 1,5,7,11,13,17,19,23,25...is the sequence of positive integers which are coprime to 12. 17 is the 6th of these integers, so a(12) = 17.`
	CROSSREFS	`Cf. A000005.` `Sequence in context: A124219 A103833 A046227 this_sequence A152178 A103340 A106615` `Adjacent sequences: A120839 A120840 A120841 this_sequence A120843 A120844 A120845`
	KEYWORD	`nonn`
	AUTHOR	`Leroy Quet Aug 18 2006`
	EXTENSIONS	`Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Aug 22 2006`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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