1,2

Table of n, a(n) for n=1..16.

Ray Ballinger, Proth Search Page

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

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

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

(PARI) is(n)=ispseudoprime(41*2^n+1) \\ Charles R Greathouse IV, Jun 13 2017

Sequence in context: A048389 A163151 A020457 * A295834 A129908 A129909

Adjacent sequences: A032367 A032368 A032369 * A032371 A032372 A032373

nonn

James R. Buddenhagen

More terms (from http://web.archive.org/web/20161028080239/http://www.prothsearch.net/riesel.html), Joerg Arndt, Apr 07 2013

approved