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A016232 Inverse of 2223rd cyclotomic polynomial. 1
1, 0, 0, -1, 0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 0, 0, 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, -2, 0, 0, 1, 0, 0, 1, 0, 0, -2, 0, 0, 1, 0, 0, 1, 0, 0, -1, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,61

COMMENTS

Periodic with period length 2223. - Ray Chandler, Apr 07 2017

LINKS

Robert Israel, Table of n, a(n) for n = 0..10000

Index entries for linear recurrences with constant coefficients, order 1296.

Index to sequences related to inverse of cyclotomic polynomials

FORMULA

From Robert Israel, Apr 19 2016: (Start)

G.f.: 1/C_2223(x), where C_n(x) is the n-th cyclotomic polynomial.

a(n) = 0 if n is not divisible by 3.

a(3*n) = A014750(n).- (End)

MAPLE

with(numtheory, cyclotomic); c := n->series(1/cyclotomic(n, x), x, 80);

MATHEMATICA

CoefficientList[Series[1/Cyclotomic[2223, x], {x, 0, 120}], x] (* Harvey P. Dale, Jan 30 2019 *)

CROSSREFS

Sequence in context: A203945 A212663 A015692 * A007949 A191265 A320003

Adjacent sequences:  A016229 A016230 A016231 * A016233 A016234 A016235

KEYWORD

sign

AUTHOR

Simon Plouffe

STATUS

approved

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Last modified November 25 20:20 EST 2020. Contains 338627 sequences. (Running on oeis4.)