A050591 - OEIS

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A050591

Numbers n such that 131*2^n-1 is prime.

2, 14, 34, 38, 42, 78, 90, 178, 778, 974, 1878, 3718, 4050, 5466, 6478, 35662, 40046, 56346, 98626, 131026, 138658 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`Also in the sequence: 603738 - Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008`
	LINKS	`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` `Kosmaj, Riesel list k<300.`
	CROSSREFS	`Sequence in context: A031301 A202638 A083015 * A073535 A060626 A096311` `Adjacent sequences: A050588 A050589 A050590 * A050592 A050593 A050594`
	KEYWORD	`hard,nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Dec 29 1999`
	EXTENSIONS	`More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008`

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Last modified February 17 14:50 EST 2012. Contains 206050 sequences.