A015615 Inverse of 1606th cyclotomic polynomial.

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

Offset

0,1

Comments

Periodic with period length 1606. - Ray Chandler, Apr 07 2017

Links

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

Index entries for periodic sequences, period 1606.

Index entries for linear recurrences with constant coefficients, order 720.

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[1606, x], {x, 0, 120}], x] (* Harvey P. Dale, Jul 28 2019 *)

Prog

(PARI) first(n)=Vec(1/polcyclo(1606)+O(x^(n+1))) \\ Charles R Greathouse IV, Jun 01 2026

Crossrefs

Sequence in context: A014878 A015747 A014812 * A014790 A015571 A014746

Adjacent sequences: A015612 A015613 A015614 * A015616 A015617 A015618

Keyword

sign,easy,changed

Author

Simon Plouffe

Status

approved