A058237 Numbers k such that x^k + x^4 + 2 is irreducible over GF(3).

1, 2, 3, 5, 8, 9, 13, 16, 24, 29, 56, 120, 160, 216, 493, 1093, 1456, 1784, 2149, 2552, 2813, 2833, 2969, 5528, 5912, 6253

Offset

1,2

Links

Table of n, a(n) for n=1..26.

Prog

(PARI) is(k) = polisirreducible(Mod(1, 3)*(x^k + x^4 + 2)); \\ Jinyuan Wang, Apr 15 2020

Crossrefs

Cf. A057463.

Sequence in context: A256656 A035422 A195896 * A251599 A270151 A009388

Adjacent sequences: A058234 A058235 A058236 * A058238 A058239 A058240

Keyword

nonn,more

Author

Robert G. Wilson v, Dec 01 2000

Extensions

a(16) from Jinyuan Wang, Apr 15 2020

a(17)-a(26) from Bill McEachen, Sep 24 2025

Status

approved