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A152943 Odd squarefree numbers n such that the cyclotomic polynomial Phi(n,x) has height 5. 7
1785, 2145, 2717, 3705, 3795, 3885, 3927, 4785, 4845, 5005, 5115, 5187, 5291, 5313, 5655, 6765, 7035, 7215, 7293, 8211, 8265, 8385, 8569, 8855, 9269, 9435, 9735, 9867, 10065, 10545, 10659, 10857, 10965, 11055, 11339, 11685, 12243, 12597, 12673 (list; graph; refs; listen; history; text; internal format)
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))))==5 \\ Charles R Greathouse IV, Nov 05 2017

CROSSREFS

Cf. A152955, A152940, A152941, A152942.

Sequence in context: A114075 A232315 A013593 * A202401 A237633 A244275

Adjacent sequences:  A152940 A152941 A152942 * A152944 A152945 A152946

KEYWORD

nonn

AUTHOR

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

STATUS

approved

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Last modified August 13 02:09 EDT 2020. Contains 336441 sequences. (Running on oeis4.)