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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 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 STATUS approved

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