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%I A063699 #9 Apr 30 2019 08:24:50
%S A063699 0,1,0,0,0,0,10,0,0,0,1010,0,100,0,101010,10010010,0,0,1000,0,1000100,
%T A063699 100100010010,1010101010,0,10000,0,101010101010,0,10001000100,0,
%U A063699 111000,0,0,10010010010010010010,1010101010101010,100001010010100101000010
%N A063699 Positions of negative coefficients in cyclotomic polynomial Phi_n(x), A063698 in binary.
%H A063699 <a href="/index/Cy#CyclotomicPolynomialsCoefficients">Index entries for cyclotomic polynomials, positions of coefficients</a>
%e A063699 E.g. Phi_15(x) = x^8 - x^7 + x^5 - x^4 + x^3 - x + 1, thus the 1-bits of a(15) are at positions 1,4 and 7, thus we get a(15) = 10010010
%p A063699 map(convert, A063698,binary);
%Y A063699 Cf. A063697, A063671, A063672.
%K A063699 nonn,base
%O A063699 0,7
%A A063699 _Antti Karttunen_, Aug 03 2001

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