A057478 - OEIS

A057478

Numbers k such that x^k + x^8 + 1 is irreducible over GF(2).

9, 15, 39, 105, 119, 153, 177, 209, 3143, 13169, 19833, 33567, 53129, 64439, 88871, 109865, 122945, 138543

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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

KEYWORD

nonn,more

AUTHOR

EXTENSIONS

a(9) from Jinyuan Wang, Apr 15 2020

a(10)-a(18) from Lucas A. Brown, Nov 28 2022

STATUS

approved