1,1

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 k*2^n-1 (or k*2^n+1) is prime

Kosmaj, Riesel list k<300.

Cf. A032364 = 29*2^n+1 is prime.

Sequence in context: A091530 A109957 A101205 this_sequence A094559 A049426 A057725

Adjacent sequences: A050537 A050538 A050539 this_sequence A050541 A050542 A050543

hard,nonn

N. J. A. Sloane (njas(AT)research.att.com), Dec 29 1999

One more term from Hugo Pfoertner (hugo(AT)pfoertner.org), Aug 29 2004

1478344 from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008