A014247 - OEIS

A014247

Inverse of 238th cyclotomic polynomial.

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

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OFFSET

0,1

COMMENTS

Periodic with period length 238. - Ray Chandler, Apr 03 2017

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (-1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, -1, -1, 0, 1, 1, 0, 0, 1, 1, 0, -1, -1, 0, 0, -1, -1, 0, 1, 1, 0, -1, 0, 1, 0, -1, -1, 0, 1, 0, -1, 0, 1, 1, 0, -1, 0, 1, 1, 0, -1, 0, 1, 0, -1, -1, 0, 1, 0, -1, 0, 1, 1, 0, -1, -1, 0, 0, -1, -1, 0, 1, 1, 0, 0, 1, 1, 0, -1, -1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, -1, -1).

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[238, x], {x, 0, 200}], x] (* Vincenzo Librandi, Apr 07 2014 *)

CROSSREFS

Cf. similar sequences listed in A240328, A240467.

Sequence in context: A014142 A014275 A014128 * A014100 A014191 A014086

Adjacent sequences: A014244 A014245 A014246 * A014248 A014249 A014250

KEYWORD

sign,easy

AUTHOR

Simon Plouffe

STATUS

approved