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 A240329 Inverse of 41st cyclotomic polynomial. 3
 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, 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, 1, -1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0 COMMENTS Periodic with period length 41. - 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). MATHEMATICA CoefficientList[Series[1/Cyclotomic[41, x], {x, 0, 100}], x] 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, 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}, 84] (* Ray Chandler, Sep 15 2015 *) PROG (MAGMA) &cat[[n le 2 select -(-1)^(n) else 0: n in [1..41]]: m in [1..4]]; CROSSREFS Cf. similar sequences listed in A240328. Sequence in context: A240348 A240331 A240330 * A240328 A240357 A014040 Adjacent sequences:  A240326 A240327 A240328 * A240330 A240331 A240332 KEYWORD sign,easy AUTHOR Vincenzo Librandi, Apr 04 2014 STATUS approved

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Last modified April 25 04:14 EDT 2019. Contains 322451 sequences. (Running on oeis4.)