1,1

Table of n, a(n) for n=1..32.

Ray Ballinger, Proth Search Page

Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for 300 < k < 600

Y. Gallot, Proth.exe: Windows Program for Finding Large Primes

Wilfrid Keller, List of primes k.2^n - 1 for k < 300

Eric Weisstein's World of Mathematics, Proth Prime

Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime

Select[Range[1000], PrimeQ[387*2^# + 1] &] (* Robert Price, Jan 03 2019 *)

Sequence in context: A194112 A005449 A293401 * A333637 A113422 A061802

Adjacent sequences: A323035 A323036 A323037 * A323039 A323040 A323041

nonn,more,hard

Robert Price, Jan 03 2019

approved