%I #11 Sep 09 2022 23:36:57
%S 3,6,9,18,65,66,287,354
%N Numbers k such that x^k + x^2 + 1 is irreducible over GF(7).
%Y Cf. A057460, A058857.
%K nonn
%O 1,1
%A _Robert G. Wilson v_, Jan 16 2001