OFFSET
1,1
COMMENTS
a(10) > 10^5. - Tyler NeSmith, May 11 2021
LINKS
J. Brillhart, D. H. Lehmer and J. L. Selfridge, New primality criteria and factorizations of 2^m+-1, Math. Compl. 29 (1975) 620-647.
John Eisenmann, Prime Numbers of the Form a * 14^b - 1.
Victor Shoup, A Computational Introduction to Number Theory and Algebra, 2008, page 348.
Eric Weisstein's World of Mathematics, Lucas Sequence.
Eric Weisstein's World of Mathematics, Rabin-Miller Strong Pseudoprime Test.
MATHEMATICA
Select[Range[0, 15000], PrimeQ[2 14^# - 1] &] (* Vincenzo Librandi, May 24 2016 *)
PROG
(PARI) is(n)=ispseudoprime(2*14^n-1) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
nonn,more,changed
AUTHOR
Jack P. Eisenmann, May 23 2016
EXTENSIONS
a(7)-a(9) from Tyler NeSmith, May 11 2021
STATUS
approved