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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
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..13.
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
.
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
Adjacent sequences:
A273516
A273517
A273518
*
A273520
A273521
A273522
KEYWORD
nonn
,
more
AUTHOR
Jack P. Eisenmann
, May 23 2016
STATUS
approved
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Last modified August 27 03:11 EDT 2024. Contains 375462 sequences. (Running on oeis4.)