login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A015569
Inverse of 1560th cyclotomic polynomial.
1
1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, -1
OFFSET
0,1
COMMENTS
Periodic with period length 1560. - Ray Chandler, Apr 07 2017
MAPLE
with(numtheory, cyclotomic); c := n->series(1/cyclotomic(n, x), x, 80);
MATHEMATICA
CoefficientList[Series[1/Cyclotomic[1560, x], {x, 0, 100}], x] (* G. C. Greubel, Jan 06 2018 *)
PROG
(PARI) Vec(1/polcyclo(1560) + O(x^100)) \\ Michel Marcus, Jan 07 2018
CROSSREFS
Sequence in context: A016328 A016289 A016049 * A015329 A276791 A111900
KEYWORD
sign
AUTHOR
STATUS
approved

  NODES
COMMUNITY 1
INTERN 1