%I #10 Apr 17 2020 07:49:37
%S 1,3,4,7,8,11,12,15,19,28,35,60,67,80,108,111,119,151,183,331,631,728,
%T 892,1276
%N Numbers n such that x^n + x^2 + 2 is irreducible over GF(3).
%o (PARI) is(k) = polisirreducible(Mod(1, 3)*(x^k + x*x + 1)); \\ _Jinyuan Wang_, Apr 15 2020
%Y Cf. A057460.
%K nonn,more
%O 1,2
%A _Robert G. Wilson v_, Dec 01 2000
%E a(24) from _Jinyuan Wang_, Apr 15 2020