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%I A014100 #17 Apr 03 2017 13:56:27
%S A014100 1,1,1,1,1,1,1,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0,0,0,0,0,0,0,
%T A014100 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,
%U A014100 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
%N A014100 Inverse of 91st cyclotomic polynomial.
%C A014100 Periodic with period length 91. - _Ray Chandler_, Apr 03 2017
%H A014100 Vincenzo Librandi, <a href="/A014100/b014100.txt">Table of n, a(n) for n = 0..1000</a>
%H A014100 <a href="/index/Rec#order_72">Index entries for linear recurrences with constant coefficients</a>, signature (1, 0, 0, 0, 0, 0, -1, 1, 0, 0, 0, 0, -1, 0, 1, 0, 0, 0, 0, -1, 0, 1, 0, 0, 0, -1, 0, 0, 1, 0, 0, 0, -1, 0, 0, 1, 0, 0, -1, 0, 0, 0, 1, 0, 0, -1, 0, 0, 0, 1, 0, -1, 0, 0, 0, 0, 1, 0, -1, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 1, -1).
%H A014100 <a href="/index/Pol#poly_cyclo_inv">Index to sequences related to inverse of cyclotomic polynomials</a>
%p A014100 with(numtheory,cyclotomic); c := n->series(1/cyclotomic(n,x),x,80);
%t A014100 CoefficientList[Series[1/Cyclotomic[91, x], {x, 0, 200}], x] (* _Vincenzo Librandi_, Apr 06 2014 *)
%Y A014100 Cf. similar sequences listed in A240328 and A240465.
%K A014100 sign,easy
%O A014100 0,1
%A A014100 _Simon Plouffe_

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