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1,2
Table of n, a(n) for n=1..33.
Ray Ballinger, Proth Search Page
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
Sequence in context: A187573 A057653 A085759 * A125018 A074787 A255645
Adjacent sequences: A032490 A032491 A032492 * A032494 A032495 A032496
nonn,hard
N. J. A. Sloane.
approved