A139318 - OEIS

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A139318

a(n) = (A139317(n)-1)/n.

1, 1, 2, 1, 2, 2, 4, 2, 2, 3, 2, 3, 4, 3, 4, 6, 6, 4, 10, 2, 6, 3, 2, 8, 4, 3, 4, 4, 2, 5, 10, 8, 6, 4, 2, 5, 4, 6, 4, 6, 2, 5, 4, 2, 6, 3, 6, 7, 4, 5, 6, 6, 2, 3, 6, 5, 8, 4, 12, 7, 6, 6, 6, 7, 2, 6, 4, 6, 4, 7, 8, 6, 4, 3, 8, 10, 6, 7, 4, 5, 6, 9, 2, 8, 12, 5, 4, 4, 2, 6, 10, 5, 12, 7, 6, 6, 4, 9, 10, 7 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	EXAMPLE	`For A139317(7) we check: 71 +1= 8, which is not coprime to A139317(1)=2. 72 +1= 15, which is not coprime to either A139317(2)=3 or to A139317(4)=5. 73 +1 = 22, which is not coprime to either A139317(1)=2 or to A139317(5)=11. But 74+1 = 29, which is coprime to terms A139317(1) through A139317(6). So a(7) = 4.`
	CROSSREFS	`Cf. A139317, A139320.` `Sequence in context: A122838 A050378 A161833 * A205779 A205551 A054541` `Adjacent sequences: A139315 A139316 A139317 * A139319 A139320 A139321`
	KEYWORD	`nonn`
	AUTHOR	`Leroy Quet Apr 13 2008`
	EXTENSIONS	`More terms from Max Alekseyev (maxale(AT)gmail.com), Apr 29 2011`

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Last modified February 17 10:05 EST 2012. Contains 206009 sequences.