A050840 - OEIS

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A050840

Numbers n such that 177*2^n-1 is prime.

1, 12, 13, 24, 25, 34, 36, 48, 61, 66, 196, 264, 376, 672, 732, 877, 1032, 1104, 1177, 1242, 2664, 7756, 35034, 37728, 57796, 96978, 98353, 277458, 282546, 418816, 582454, 653686, 663601, 665874, 668682, 769026 (list; graph; refs; listen; history; internal format)

	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: A035123 A140212 A123132 * A118068 A108710 A108709` `Adjacent sequences: A050837 A050838 A050839 * A050841 A050842 A050843`
	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 19:13 EST 2012. Contains 206085 sequences.