%I #39 Sep 17 2024 12:44:40
%S 0,1,3,5,11,209,1281
%N Integers k such that k^k + k^2 + 3*k + 2 is prime.
%C a(8) > 20000, if it exists. - _Michael S. Branicky_, Sep 17 2024
%e For k = 3, k^k + k^2 + 3*k + 2 = 47 and 47 is prime.
%o (PARI) isok(k) = ispseudoprime(k^k + k^2 + 3*k + 2); \\ _Michel Marcus_, Sep 10 2022
%Y Cf. A058912, A187605, A231712.
%K nonn,more
%O 1,3
%A _Marco RipĂ _, Sep 10 2022