A152941 Odd squarefree numbers n such that the cyclotomic polynomial Phi(n,x) has height 3.

385, 595, 665, 935, 1155, 1235, 1309, 1463, 1495, 1729, 1855, 1955, 2065, 2261, 2465, 2665, 2795, 2821, 3045, 3059, 3115, 3145, 3289, 3451, 3619, 3655, 3857, 4123, 4277, 4389, 4403, 4433, 4669, 4697, 4745, 4807, 4879, 4935, 4945, 5015, 5083, 5117, 5285

Offset

1,1

Comments

The height of a polynomial is the maximum of the absolute value of its coefficients. Subsequence of A154430.

Links

T. D. Noe, Table of n, a(n) for n = 1..1000

Prog

(PARI) is(n)=issquarefree(n) && n%2 && vecmax(abs(Vec(polcyclo(n))))==3 \\ Charles R Greathouse IV, Nov 05 2017

Crossrefs

Cf. A152955, A152940, A152942, A152943.

Sequence in context: A227974 A069043 A013591 * A229853 A317272 A157354

Adjacent sequences: A152938 A152939 A152940 * A152942 A152943 A152944

Keyword

nonn

Author

T. D. Noe, Dec 16 2008, Jan 09 2008

Status

approved