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A015590
Inverse of 1581st cyclotomic polynomial.
1
1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 1, 0, -1, 1, 0, -1, 1, 0, -1, 1, 0, -1, 1, 0, 0, 0, 0, 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 1, 0, -1, 1, 0, -1, 1, 0, -1, 1, 0, -1, 1, 0, 0, 0, 0, 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 1, 0
OFFSET
0,1
COMMENTS
Periodic with period length 1581. - Ray Chandler, Apr 07 2017
MAPLE
with(numtheory, cyclotomic); c := n->series(1/cyclotomic(n, x), x, 80);
MATHEMATICA
CoefficientList[Series[1/Cyclotomic[1581, x], {x, 0, 100}], x] (* G. C. Greubel, Jan 06 2018 *)
PROG
(PARI) Vec(1/polcyclo(1581) + O(x^100)) \\ Michel Marcus, Jan 07 2018
CROSSREFS
Sequence in context: A000484 A014978 A015947 * A011649 A016202 A016100
KEYWORD
sign
AUTHOR
STATUS
approved