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A160338
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Height (maximum absolute value of coefficients) of the n-th cyclotomic polynomial.
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7
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2
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OFFSET
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1,105
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COMMENTS
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Different from A137979: first time these sequence disagree is at n=14235 with a(14235)=2 and A137979(14235)=3.
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LINKS
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EXAMPLE
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a(4) = 1 because the 4th cyclotomic polynomial x^2 + 1 has height 1.
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MATHEMATICA
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Table[Max@Abs@CoefficientList[Cyclotomic[n, x], x], {n, 1, 105}] (* from Jean-François Alcover, Apr 02 2011 *)
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PROG
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(PARI) a(n) = vecmax(abs(Vec(polcyclo(n))))
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CROSSREFS
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KEYWORD
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nonn,nice
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AUTHOR
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STATUS
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approved
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