OFFSET
1,1
COMMENTS
Terms greater than 1000 may correspond to (unproven) strong pseudoprimes.
No other terms less than 100000. - Robert Price, Apr 15 2012
LINKS
Henri Lifchitz and Renaud Lifchitz, Top probable primes of the form 16^p-15^p
PROG
(PARI) is(n)=ispseudoprime(16^n-15^n) \\ Charles R Greathouse IV, Jun 12 2017
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Mike Oakes, May 18 2001, May 19 2001
EXTENSIONS
a(7) (found by Mike Oakes in August 2003) and a(8) (found by Jean-Louis Charton in December 2010) from Jean-Louis Charton, Mar 19 2011
Edited by M. F. Hasler, Sep 16 2013
STATUS
approved