A058243 Numbers n such that x^n + x^8 + 1 is irreducible over GF(3).

2, 3, 4, 5, 6, 11, 15, 16, 19, 23, 32, 48, 112, 127, 147, 187, 203, 240, 320, 335, 432, 471, 515, 775, 887, 1055, 1131, 1423

Offset

1,1

Links

Table of n, a(n) for n=1..28.

Prog

(PARI) is(k) = polisirreducible(Mod(1, 3)*(x^k + x^8 + 2)); \\ Jinyuan Wang, Apr 15 2020

Crossrefs

Cf. A057478.

Sequence in context: A075073 A157420 A221471 * A264665 A308776 A339556

Adjacent sequences: A058240 A058241 A058242 * A058244 A058245 A058246

Keyword

nonn,more

Author

Robert G. Wilson v, Dec 01 2000

Extensions

a(26)-a(28) from Jinyuan Wang, Apr 15 2020

Status

approved