A152942 Odd squarefree numbers n such that the cyclotomic polynomial Phi(n,x) has height 4.

1365, 1995, 2415, 2431, 2737, 2849, 3003, 3255, 3315, 3553, 3689, 4081, 4147, 4199, 4305, 4485, 4515, 4543, 4991, 5593, 5681, 5865, 6045, 6105, 6251, 6405, 6409, 6555, 6721, 6851, 7049, 7395, 7469, 7665, 7667, 7755, 7777, 7905, 8547, 8715, 8835, 9165

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))))==4 \\ Charles R Greathouse IV, Nov 05 2017

Crossrefs

Cf. A152955, A152940, A152941, A152943.

Sequence in context: A028486 A281479 A013592 * A043686 A043578 A004970

Adjacent sequences: A152939 A152940 A152941 * A152943 A152944 A152945

Keyword

nonn

Author

T. D. Noe, Dec 16 2008, Jan 09 2009

Status

approved