A032474 - OEIS

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A032474

Numbers n such that 195*2^n+1 is prime.

4, 8, 13, 14, 20, 31, 38, 70, 80, 86, 110, 125, 140, 170, 179, 230, 338, 365, 374, 517, 860, 944, 1045, 1270, 1861, 3623, 4414, 10448, 27766, 30836, 34666, 39826, 55763, 59260, 70228, 71590, 76618 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	LINKS	`Ray Ballinger, Proth Search Page` `Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300` `Wilfrid Keller, List of primes k.2^n - 1 for k < 300` `Index entries for sequences of n such that k2^n-1 (or k2^n+1) is prime`
	CROSSREFS	`Sequence in context: A137337 A061517 A058759 * A103024 A131041 A081843` `Adjacent sequences: A032471 A032472 A032473 * A032475 A032476 A032477`
	KEYWORD	`nonn,hard`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 16 09:56 EST 2012. Contains 205904 sequences.