A050537 - OEIS

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A050537

Numbers n such that 23*2^n-1 is prime.

4, 6, 12, 46, 72, 244, 264, 544, 888, 1146, 14826, 24978, 103386, 323668, 458362, 496422 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	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	`Cf. A032361 232^n+1 is prime.` `Sequence in context: A060202 A062624 A154666 A114413 A068507 A133454` `Adjacent sequences: A050534 A050535 A050536 * A050538 A050539 A050540`
	KEYWORD	`hard,nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Dec 29 1999`
	EXTENSIONS	`More terms from Hugo Pfoertner (hugo(AT)pfoertner.org), Jul 14 2004` `More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008`

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Last modified February 15 09:00 EST 2012. Contains 205746 sequences.