A015256 Inverse of 1247th cyclotomic polynomial.

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

Offset

0,1

Comments

Periodic with period length 1247. - Ray Chandler, Apr 07 2017

Links

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

Index entries for periodic sequences, period 1247.

Index entries for linear recurrences with constant coefficients, order 1176.

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[1247, x], {x, 0, 120}], x, 120] (* Harvey P. Dale, Apr 13 2022 *)

Prog

(PARI) first(n)=Vec(1/polcyclo(1247)+O(x^(n+1))) \\ Charles R Greathouse IV, Jun 01 2026

Crossrefs

Sequence in context: A015720 A015546 A015372 * A015198 A015082 A016155

Adjacent sequences: A015253 A015254 A015255 * A015257 A015258 A015259

Keyword

sign,easy

Author

Simon Plouffe

Status

approved