A015681 - OEIS

A015681

Inverse of 1672nd cyclotomic polynomial.

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

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OFFSET

0,1

COMMENTS

Periodic with period length 1672. - Ray Chandler, Apr 07 2017

LINKS

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

Index entries for periodic sequences, period 1672.

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[1672, x], {x, 0, 120}], x] (* Harvey P. Dale, Dec 21 2015 *)

PROG

(PARI) first(n)=Vec(1/polcyclo(1672)+O(x^(n+1))) \\ Charles R Greathouse IV, Jun 01 2026

CROSSREFS

Sequence in context: A014737 A014625 A016033 * A015505 A015153 A015985

Adjacent sequences: A015678 A015679 A015680 * A015682 A015683 A015684

KEYWORD

sign,easy

AUTHOR

Simon Plouffe

STATUS

approved