id:A143663 - OEIS Search Results

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a(n) is the least prime such that the multiplicative order of 3 mod a(n) equals n, or a(n)=1 if such prime does not exist.

+0
3

2, 1, 13, 5, 11, 7, 1093, 41, 757, 61, 23, 73, 797161, 547, 4561, 17, 1871, 19, 1597, 1181, 368089, 67, 47, 6481, 8951, 398581, 109, 29, 59, 31, 683, 21523361 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`If a(n) differs from 1, then a(n) is the minimal prime divisor of A064079(n).`
	CROSSREFS	`Cf. A002326 A064079.` `Sequence in context: A007418 A037271 A074955 this_sequence A064079 A167584 A112226` `Adjacent sequences: A143660 A143661 A143662 this_sequence A143664 A143665 A143666`
	KEYWORD	`nonn`
	AUTHOR	`Vladimir Shevelev (shevelev(AT)bgu.ac.il), Aug 28 2008`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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