OFFSET
1,1
COMMENTS
All terms are primes.
There is no further term up to prime(1400)=11657. - Farideh Firoozbakht, Apr 04 2007
No other terms < 100,000.
MATHEMATICA
k=11; Select[ Prime[ Range[1, 200] ], PrimeQ[ ((k+3)^# - 3^#)/k ]& ]
PROG
(PARI) is(n)=isprime((14^n-3^n)/11) \\ Charles R Greathouse IV, Feb 17 2017
CROSSREFS
KEYWORD
hard,nonn
AUTHOR
Alexander Adamchuk, Feb 11 2007
EXTENSIONS
More terms from Farideh Firoozbakht, Apr 04 2007
Added term a(7)=15649 by Robert Price, Sep 12 2011
STATUS
approved