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Table of n, a(n) for n=1..49.
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
Ray Ballinger, Proth Search Page
Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime
Sequence in context: A059096 A257678 A002038 * A240212 A093677 A086495
Adjacent sequences: A032498 A032499 A032500 * A032502 A032503 A032504
N. J. A. Sloane.