id:A050889 - OEIS Search Results

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Numbers n such that 261*2^n-1 is prime.

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1, 3, 6, 9, 21, 34, 43, 49, 114, 115, 178, 322, 411, 438, 454, 589, 598, 754, 801, 1173, 1546, 1699, 2155, 2994, 4038, 5439, 6442, 10699, 12274, 13314, 13911, 19309, 28675, 29658, 31173, 33606, 65763, 90861, 116706, 185823, 618918, 660709, 802123 (list; graph; listen)

	OFFSET	`1,2`
	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: A015938 A116614 A089001 this_sequence A026095 A061929 A019461` `Adjacent sequences: A050886 A050887 A050888 this_sequence A050890 A050891 A050892`
	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 November 23 17:09 EST 2009. Contains 167438 sequences.

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