A015647 Inverse of 1638th cyclotomic polynomial.

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

Offset

0,1

Comments

Periodic with period length 1638. - Ray Chandler, Apr 07 2017

Links

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

Index entries for periodic sequences, period 1638.

Index entries for linear recurrences with constant coefficients, order 432.

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[1638, x], {x, 0, 120}], x] (* Harvey P. Dale, May 28 2018 *)

Prog

(PARI) first(n)=Vec(1/polcyclo(1638)+O(x^(n+1))) \\ Charles R Greathouse IV, Jun 01 2026

Crossrefs

Sequence in context: A015080 A016151 A014828 * A015998 A014018 A014027

Adjacent sequences: A015644 A015645 A015646 * A015648 A015649 A015650

Keyword

sign,easy

Author

Simon Plouffe

Status

approved