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A273519
Numbers n such that 7*14^n-1 is prime.
0
1, 3, 5, 7, 9, 21, 39, 59, 99, 323, 331, 359, 617, 2529
OFFSET
0,2
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.
Eric Weisstein's World of Mathematics, Lucas Sequence.
Eric Weisstein's World of Mathematics, Rabin-Miller Strong Pseudoprime Test.
PROG
(PARI) is(n)=ispseudoprime(7*14^n-1) \\ Charles R Greathouse IV, Jun 08 2016
CROSSREFS
Sequence in context: A101813 A134719 A373509 * A241175 A342729 A099995
KEYWORD
nonn,more
AUTHOR
Jack P. Eisenmann, May 23 2016
STATUS
approved