A108320 - OEIS

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A108320

Numbers n such that 609 * 10^n - 1 is prime.

1, 2, 3, 4, 5, 6, 12, 17, 43, 46, 50, 88, 110, 187, 472, 832, 834, 1034, 1311, 1700, 2756, 5470, 6124, 7404, 7891, 12010 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	EXAMPLE	`a(4)=4 because 609*10^4-1 = 6089999, a prime.`
	CROSSREFS	`Cf. A053580.` `Sequence in context: A032885 A023788 A032989 * A177958 A032941 A059460` `Adjacent sequences: A108317 A108318 A108319 * A108321 A108322 A108323`
	KEYWORD	`more,nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Jun 30 2005`

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.