A015619 Inverse of 1610th cyclotomic polynomial.

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

Offset

0,1

Comments

Periodic with period length 1610. - Ray Chandler, Apr 07 2017

Links

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

Index entries for periodic sequences, period 1610.

Index entries for linear recurrences with constant coefficients, order 528.

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[1610, x], {x, 0, 90}], x] (* Harvey P. Dale, Aug 25 2025 *)

Prog

(PARI) first(n)=Vec(1/polcyclo(1610)+O(x^(n+1))) \\ Charles R Greathouse IV, Jun 01 2026

Crossrefs

Sequence in context: A014464 A014919 A014814 * A011634 A011641 A016144

Adjacent sequences: A015616 A015617 A015618 * A015620 A015621 A015622

Keyword

sign,easy

Author

Simon Plouffe

Status

approved