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 A240330 Inverse of 43rd cyclotomic polynomial. 2
 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0 COMMENTS Periodic with period length 43. - 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 (-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1). MATHEMATICA CoefficientList[Series[1/Cyclotomic[43, x], {x, 0, 100}], x] (* Vincenzo Librandi, Apr 04 2014 *) LinearRecurrence[{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, {1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, 88] (* Ray Chandler, Sep 15 2015 *) PROG (MAGMA) &cat[[n le 2 select -(-1)^(n) else 0: n in [1..43]]: m in [1..4]]; (MAGMA) t:=43; u:=3; m:=u*t+2; R:=PowerSeriesRing(Integers(), m); Coefficients(R!(1/CyclotomicPolynomial(t))); // Bruno Berselli, Apr 04 2014 CROSSREFS Cf. similar sequences listed in A240328. Sequence in context: A240349 A240348 A240331 * A240329 A240328 A240357 Adjacent sequences:  A240327 A240328 A240329 * A240331 A240332 A240333 KEYWORD sign,easy AUTHOR Vincenzo Librandi, Apr 04 2014 STATUS approved

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Last modified April 18 22:08 EDT 2019. Contains 322237 sequences. (Running on oeis4.)