A057483 - OEIS

A057483

Numbers n such that x^n + x^13 + 1 is irreducible over GF(2).

28, 31, 33, 84, 87, 103, 174, 414, 574, 687, 780, 1111, 1449, 1860, 6964, 7708, 11700, 17428, 19398, 19876, 78391, 131305, 136564, 181684

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OFFSET

1,1

COMMENTS

Any subsequent terms are > 300000.

LINKS

Lucas A. Brown, Python program.

Lucas A. Brown, Sage program.

PROG

(PARI) is(k) = polisirreducible(Mod(1, 2)*(x^k + x^13 + 1)); \\ Jinyuan Wang, Apr 15 2020

CROSSREFS

KEYWORD

nonn,more

AUTHOR

EXTENSIONS

a(11)-a(14) from Jinyuan Wang, Apr 15 2020

a(15)-a(24) from Lucas A. Brown, Nov 29 2022

STATUS

approved