OFFSET
0
COMMENTS
Periodic with period length 68. - 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, -1, 0, 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, -1).
MATHEMATICA
CoefficientList[Series[1/Cyclotomic[68, x], {x, 0, 200}], x]
CROSSREFS
KEYWORD
sign,easy
AUTHOR
Vincenzo Librandi, Apr 04 2014
STATUS
approved