id:A050539 - OEIS Search Results

Search: id:A050539

Displaying 1-1 of 1 results found.

page 1

Numbers n such that 27*2^n-1 is prime.

+0
2

1, 2, 4, 5, 8, 10, 14, 28, 37, 38, 70, 121, 122, 160, 170, 253, 329, 362, 454, 485, 500, 574, 892, 962, 1213, 1580, 2642, 2708, 4505, 8152, 11858, 13300, 15041, 16118, 16778, 19069, 22769, 29020, 30298, 30377, 35942, 42817, 42869, 62024, 74629, 90449, 91042, 117901, 128594, 143330, 152530, 157898, 175852, 340682, 444622, 627794, 729314, 777992 (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	`Cf. A032363 = 27*2^n+1 is prime.` `Sequence in context: A163295 A101274 A080222 this_sequence A039895 A105425 A032937` `Adjacent sequences: A050536 A050537 A050538 this_sequence A050540 A050541 A050542`
	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), Aug 17 2004` `More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008`

page 1

Search completed in 0.002 seconds

Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research