OFFSET
1,1
COMMENTS
a(10) > 2*10^5. - Robert Price, Mar 20 2015
EXAMPLE
11*12^4 + 1 = 228097, which is prime.
MATHEMATICA
Select[Range[0, 1000], PrimeQ[11*12^# + 1] &]
PROG
(Magma) [n: n in [1..600]| IsPrime(11*12^n+1)]; // Vincenzo Librandi, Mar 21 2015
(PARI) is(n)=ispseudoprime(11*12^n+1) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Robert Price, Mar 20 2015
STATUS
approved