A015590 Inverse of 1581st cyclotomic polynomial.

1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 1, 0, -1, 1, 0, -1, 1, 0, -1, 1, 0, -1, 1, 0, 0, 0, 0, 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 1, 0, -1, 1, 0, -1, 1, 0, -1, 1, 0, -1, 1, 0, 0, 0, 0, 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 1, 0

Offset

0,1

Comments

Periodic with period length 1581. - Ray Chandler, Apr 07 2017

Links

Ray Chandler, Table of n, a(n) for n = 0..2000

Index entries for linear recurrences with constant coefficients, order 960.

Index to sequences related to inverse of cyclotomic polynomials

Maple

with(numtheory, cyclotomic); c := n->series(1/cyclotomic(n, x), x, 80);

Mathematica

CoefficientList[Series[1/Cyclotomic[1581, x], {x, 0, 100}], x] (* G. C. Greubel, Jan 06 2018 *)

Prog

(PARI) Vec(1/polcyclo(1581) + O(x^100)) \\ Michel Marcus, Jan 07 2018

Crossrefs

Sequence in context: A000484 A014978 A015947 * A011649 A016202 A016100

Adjacent sequences: A015587 A015588 A015589 * A015591 A015592 A015593

Keyword

sign

Author

Simon Plouffe

Status

approved