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%I #6 Nov 05 2017 13:18:56
%S 385,595,665,935,1155,1235,1309,1463,1495,1729,1855,1955,2065,2261,
%T 2465,2665,2795,2821,3045,3059,3115,3145,3289,3451,3619,3655,3857,
%U 4123,4277,4389,4403,4433,4669,4697,4745,4807,4879,4935,4945,5015,5083,5117,5285
%N Odd squarefree numbers n such that the cyclotomic polynomial Phi(n,x) has height 3.
%C The height of a polynomial is the maximum of the absolute value of its coefficients. Subsequence of A154430.
%H T. D. Noe, <a href="/A152941/b152941.txt">Table of n, a(n) for n = 1..1000</a>
%o (PARI) is(n)=issquarefree(n) && n%2 && vecmax(abs(Vec(polcyclo(n))))==3 \\ _Charles R Greathouse IV_, Nov 05 2017
%Y Cf. A152955, A152940, A152942, A152943.
%K nonn
%O 1,1
%A _T. D. Noe_, Dec 16 2008, Jan 09 2008