OFFSET
1,1
COMMENTS
Terms greater than 1000 are often only strong pseudoprimes.
All terms are primes. - Robert Price, May 07 2013
a(9) > 10^5. - Robert Price, May 07 2013
PROG
(PARI) is(n)=ispseudoprime(62^n-61^n) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
Mike Oakes, May 18 2001, May 19 2001
EXTENSIONS
a(6)-a(8) (Computer runs by Adam Marciniec) from Robert Price, May 07 2013
STATUS
approved