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1,1
Table of n, a(n) for n=1..36.
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.
(PARI) is(n)=ispseudoprime(65*2^n-1) \\ Charles R Greathouse IV, Jun 13 2017
Sequence in context: A049478 A263458 A163776 * A255843 A098145 A054167
Adjacent sequences: A050555 A050556 A050557 * A050559 A050560 A050561
hard,nonn
N. J. A. Sloane, Dec 29 1999
More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008
approved