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A057463 Numbers n such that x^n + x^4 + 1 is irreducible over GF(2). +0
2
1, 3, 7, 9, 15, 39, 57, 81, 105 (list; graph; listen)
OFFSET

1,2

LINKS

Joerg Arndt, Fxtbook

MATHEMATICA

Do[ If[ ToString[ Factor[ x^n + x^4 + 1, Modulus -> 2 ] ] == ToString[ x^n + x^4 + 1 ], Print[ n ] ], {n, 0, 750} ]

CROSSREFS

Cf. A002475.

Sequence in context: A099204 A070993 A128539 this_sequence A118258 A117583 A126106

Adjacent sequences: A057460 A057461 A057462 this_sequence A057464 A057465 A057466

KEYWORD

nonn,more

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 27 2000

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.


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