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A013592
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Orders of cyclotomic polynomials containing a coefficient the absolute value of which is >= 4.
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0
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1365, 1785, 1995, 2145, 2415, 2431, 2717, 2730, 2737, 2805, 2849, 3003, 3135, 3255, 3315, 3553, 3570, 3689, 3705, 3795, 3885, 3927, 3990, 4081, 4095, 4147, 4199, 4290, 4305, 4485, 4515, 4543, 4641, 4785, 4830, 4845, 4862, 4991, 5005, 5115, 5187, 5291, 5313
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OFFSET
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1,1
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LINKS
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MAPLE
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isA013592 := proc(n)
numtheory[cyclotomic](n, x) ;
{coeffs(%, x)} ;
map(abs, %) ;
if % minus {1, 2, 3} = {} then
false;
else
true;
end if;
end proc:
for n from 1 do
if isA013592(n) then
print(n);
end if;
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MATHEMATICA
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S[ n_ ] := For[ j=1; t=0, j<n, j++, t=Cases[ CoefficientList[ Cyclotomic[ j, x ], x ], k_ /; Abs[ k ]>3 ]; If[ Length[ t ]!=0, Print[ j ] ] ]; S[ 4290 ]
Select[Range[6300], Max[Abs[CoefficientList[Cyclotomic[#, x], x]]]>3&] (* Harvey P. Dale, Feb 26 2015 *)
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PROG
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(PARI) isok(n) = my(v = Vec(polcyclo(n))); (vecmax(v) >= 4) || (vecmin(v) <= -4); \\ Michel Marcus, Feb 26 2015
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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Peter T. Wang (peterw(AT)cco.caltech.edu)
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EXTENSIONS
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Definition clarified by and more terms from Harvey P. Dale, Feb 26 2015
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STATUS
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approved
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