OFFSET
1,1
COMMENTS
Terms greater than 1000 are often only strong pseudoprimes.
a(7) > 10^5. - Robert Price, Jun 16 2015
MATHEMATICA
Select[Range[0, 100000], PrimeQ[89^# - 88^#] &] (* Robert Price, Jun 16 2015 *)
PROG
(PARI) is(n)=ispseudoprime(89^n-88^n) \\ Charles R Greathouse IV, Jun 12 2017
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
Mike Oakes, May 18 2001, May 19 2001
EXTENSIONS
a(5)-a(6) from Robert Price (computer run by Adam Marciniec), Jun 16 2015
STATUS
approved