Many excellent designs for a new banner were submitted. We will use the best of them in rotation.
Table of n, a(n) for n=1..27.
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
Sequence in context: A220501 A053688 A036302 * A133690 A097057 A160746
Adjacent sequences: A032374 A032375 A032376 * A032378 A032379 A032380
James R. Buddenhagen
More terms from Hugo Pfoertner, Jun 20 2003
More terms (from http://www.prothsearch.net/riesel.html), Joerg Arndt, Apr 07 2013