OFFSET
1,2
COMMENTS
a(35) > 10^5. - Robert Price, May 04 2016
MATHEMATICA
Do[ If[ PrimeQ[6^n - 5^(n - 1)], Print[n]], {n, 2000}]
PROG
(PARI) is(n)=isprime(6^n-5^(n-1)) \\ Charles R Greathouse IV, Feb 17 2017
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Herman H. Rosenfeld (herm3(AT)pacbell.net) and Robert G. Wilson v, Jun 17 2004
EXTENSIONS
a(24)-a(34) from Robert Price, May 04 2016
STATUS
approved