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. A032361 23*2^n+1 is prime.

Sequence in context: A060202 A062624 A154666 this_sequence A068507 A133454 A061072

Adjacent sequences: A050534 A050535 A050536 this_sequence A050538 A050539 A050540

hard,nonn

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

More terms from Hugo Pfoertner (hugo(AT)pfoertner.org), Jul 14 2004

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