1,1

All terms < 5000 correspond to certified primes (Primo 2.2.0 beta). - Ryan Propper, Aug 08 2005

66830 was found by Henri Lifchitz.

Table of n, a(n) for n=1..27.

H. Lifchitz, Mersenne and Fermat primes field

2^12 + prime(12) = 4096 + 43 = 4139 is a prime, so 12 is a term.

Sequence in context: A281597 A039007 A050745 * A328209 A250049 A132027

Adjacent sequences: A077372 A077373 A077374 * A077376 A077377 A077378

nonn

Jason Earls, Nov 30 2002

2 more terms from Ryan Propper, Aug 08 2005

66830 sent by Jason Earls, Jan 12 2008

approved