A058236 Numbers n such that x^n + x^3 + 2 is irreducible over GF(3).

2, 4, 8, 40, 44, 56, 64, 148, 200, 320, 328, 400, 1280

Offset: 1

Author

Robert G. Wilson v, Dec 01 2000

Keywords

• nonn
• more

Crossrefs

Cf. A057461.

Programs

PARI

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

Extensions

a(13) from Jinyuan Wang, Apr 15 2020