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A057478
Numbers k such that x^k + x^8 + 1 is irreducible over GF(2).
2
9, 15, 39, 105, 119, 153, 177, 209, 3143, 13169, 19833, 33567, 53129, 64439, 88871, 109865, 122945, 138543
OFFSET
1,1
COMMENTS
Any subsequent terms are > 300000. - Lucas A. Brown, Nov 28 2022
LINKS
Lucas A. Brown, Python program.
Lucas A. Brown, Sage program.
PROG
(PARI) is(k) = polisirreducible(Mod(1, 2)*(x^k + x^8 + 1)); \\ Jinyuan Wang, Apr 15 2020
CROSSREFS
Cf. A002475.
Sequence in context: A307217 A373333 A100556 * A128687 A193579 A274757
KEYWORD
nonn,more
AUTHOR
Robert G. Wilson v, Sep 27 2000
EXTENSIONS
a(9) from Jinyuan Wang, Apr 15 2020
a(10)-a(18) from Lucas A. Brown, Nov 28 2022
STATUS
approved