login
A247958
Numbers n such that 35^n + 2 is prime.
2
0, 1, 15, 83, 1457, 3959, 5351, 5355, 41359, 50327, 54435
OFFSET
1,3
COMMENTS
After 0, all terms are odd. - Bruno Berselli, Oct 01 2014
a(12) > 2*10^5. - Robert Price, Mar 21 2015
MAPLE
A247958:=n->`if`(isprime(35^n+2), n, NULL): seq(A247958(n), n=0..1000); # Wesley Ivan Hurt, Sep 30 2014
MATHEMATICA
Select[Range[0, 10000], PrimeQ[35^# + 2] &]
PROG
(Magma) [n: n in [0..1000]| IsPrime(35^n+2)];
(PARI) is(n)=ispseudoprime(35^n+2) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Cf. similar sequences listed in A247957.
Sequence in context: A279395 A270768 A252935 * A108674 A050405 A241220
KEYWORD
nonn,more
AUTHOR
Vincenzo Librandi, Sep 28 2014
EXTENSIONS
a(9)-a(11) from Robert Price, Mar 21 2015
STATUS
approved