A058234 Numbers n such that x^n + x^9 + 2 is irreducible over GF(3).

4, 16, 52, 76, 236, 376, 380, 1064, 1460, 4600, 5204

Offset

1,1

Comments

All terms are even, as 2 is a root if n is odd. - Robert Israel, Dec 31 2015

Links

Table of n, a(n) for n=1..11.

Maple

select(n  -> Irreduc(x^n + x^9 + 2) mod 3, 2*[$1..1000]); # Robert Israel, Dec 31 2015

Crossrefs

Cf. A057479.

Sequence in context: A203840 A089093 A316321 * A188125 A007688 A320237

Adjacent sequences: A058231 A058232 A058233 * A058235 A058236 A058237

Keyword

nonn,more

Author

Robert G. Wilson v, Dec 01 2000

Extensions

a(10) and a(11) from Robert Israel, Dec 31 2015

Status

approved