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A057474
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Numbers k such that x^k + x^5 + 1 is irreducible over GF(2).
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1
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2, 3, 6, 9, 12, 14, 17, 20, 23, 44, 47, 63, 84, 129, 236, 278, 279, 297, 300, 647, 726, 737, 2574, 2660, 4233, 4500, 8207, 11900, 16046, 21983, 23999, 24596, 24849, 84929, 130926, 156308, 160046, 185142, 270641
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OFFSET
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1,1
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COMMENTS
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LINKS
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PROG
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(Sage)
P.<x> = GF(2)[]
for n in range(10^4):
if (x^n+x^5+1).is_irreducible():
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CROSSREFS
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KEYWORD
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nonn,hard,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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