1,1

Table of n, a(n) for n=1..37.

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

Ray Ballinger, Proth Search Page

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(43*2^n+1) \\ Charles R Greathouse IV, Jun 12 2017

Sequence in context: A085345 A265843 A276829 * A162802 A330320 A267461

Adjacent sequences: A032368 A032369 A032370 * A032372 A032373 A032374

nonn,changed

James R. Buddenhagen

More terms from Hugo Pfoertner, Jun 20 2003

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

a(35)-a(37) from Jeppe Stig Nielsen, Jan 18 2020

approved