1,1
Table of n, a(n) for n=1..6.
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.
Sequence in context: A221287 A177411 A219891 * A173362 A202899 A030246
Adjacent sequences: A050875 A050876 A050877 * A050879 A050880 A050881
hard,nonn
N. J. A. Sloane, Dec 29 1999
More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008
approved
