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

1, 2, 3, 5, 8, 9, 13, 16, 24, 29, 56, 120, 160, 216, 493, 1093

Offset

1,2

Links

Table of n, a(n) for n=1..16.

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

Status

approved