%I #24 Jul 12 2018 11:28:20

%S 0,1,5,941,23071

%N Numbers k such that 11^k + k^11 + 1 is prime.

%C a(6) > 10^5. - _Robert Price_, Jan 16 2013

%t Select[Range[0, 5000], PrimeQ[11^# + #^11 + 1] &]

%o (PARI) is(n)=isprime(11^n+n^11+1) \\ _Charles R Greathouse IV_, Feb 17 2017

%Y Cf. A100357, A215434-A215445.

%K nonn,hard,more

%O 1,3

%A _Vincenzo Librandi_, Sep 06 2012

%E a(5) from _Robert Price_, Jan 16 2014