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A057478 Numbers n such that x^n + x^8 + 1 is irreducible over GF(2). 2
9, 15, 39, 105, 119, 153, 177, 209 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..8.

MATHEMATICA

Do[ If[ ToString[ Factor[ x^n + x^8 + 1, Modulus -> 2 ] ] == ToString[ x^n + x^8 + 1 ], Print[ n ] ], {n, 0, 750} ]

CROSSREFS

Cf. A002475.

Sequence in context: A133763 A146475 A100556 * A128687 A193579 A274757

Adjacent sequences:  A057475 A057476 A057477 * A057479 A057480 A057481

KEYWORD

nonn

AUTHOR

Robert G. Wilson v, Sep 27 2000

STATUS

approved

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Last modified February 16 04:47 EST 2019. Contains 320140 sequences. (Running on oeis4.)