A058243 - OEIS

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A058243

Numbers n such that x^n + x^8 + 1 is irreducible over GF(3).

%I #12 Apr 17 2020 08:21:34

%S 2,3,4,5,6,11,15,16,19,23,32,48,112,127,147,187,203,240,320,335,432,

%T 471,515,775,887,1055,1131,1423

%N Numbers n such that x^n + x^8 + 1 is irreducible over GF(3).

%o (PARI) is(k) = polisirreducible(Mod(1, 3)*(x^k + x^8 + 2)); \\ _Jinyuan Wang_, Apr 15 2020

%Y Cf. A057478.

%K nonn,more

%O 1,1

%A _Robert G. Wilson v_, Dec 01 2000

%E a(26)-a(28) from _Jinyuan Wang_, Apr 15 2020