OFFSET
0,1
COMMENTS
Periodic with period length 60. - 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 (0, -1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, -1, 0, -1).
MAPLE
with(numtheory, cyclotomic); c := n->series(1/cyclotomic(n, x), x, 80);
MATHEMATICA
CoefficientList[Series[1/Cyclotomic[60, x], {x, 0, 200}], x] (* Vincenzo Librandi, Apr 05 2014 *)
LinearRecurrence[{0, -1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, -1, 0, -1}, {1, 0, -1, 0, 1, 0, 0, 0, 0, 0, 1, 0, -1, 0, 1, 0}, 81] (* Ray Chandler, Sep 15 2015 *)
CROSSREFS
KEYWORD
sign,easy
AUTHOR
STATUS
approved