id:A050851 - OEIS Search Results

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Numbers n such that 199*2^n-1 is prime.

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1, 5, 7, 15, 19, 23, 25, 27, 43, 65, 99, 125, 141, 165, 201, 211, 331, 369, 389, 445, 461, 463, 467, 513, 583, 835, 1071, 1085, 1107, 1187, 1197, 1491, 1513, 2505, 3859, 3941, 5989, 9693, 13125, 17009, 19459, 33147, 46433, 51091, 72813, 105169, 118531 (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: A081965 A094144 A031069 this_sequence A058918 A079360 A068580` `Adjacent sequences: A050848 A050849 A050850 this_sequence A050852 A050853 A050854`
	KEYWORD	`hard,nonn`
	AUTHOR	`njas, Dec 29 1999`
	EXTENSIONS	`More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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