%I #13 Jul 06 2019 12:33:11
%S 1,1,0,-1,-1,0,1,1,0,-1,-1,0,1,1,0,-1,-1,-1,0,0,0,0,0,0,0,0,0,0,0,0,0,
%T 0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,0,1,1,0,-1,-1,0,
%U 1,1,0,-1,-1,0,1,1,0,0,0,0,0,0,0,0,0,0
%N Inverse of 1938th cyclotomic polynomial.
%C Periodic with period length 1938. - _Ray Chandler_, Apr 07 2017
%H Ray Chandler, <a href="/A015947/b015947.txt">Table of n, a(n) for n = 0..2000</a>
%H <a href="/index/Rec#order_576">Index entries for linear recurrences with constant coefficients</a>, order 576.
%H <a href="/index/Pol#poly_cyclo_inv">Index to sequences related to inverse of cyclotomic polynomials</a>
%p with(numtheory,cyclotomic); c := n->series(1/cyclotomic(n,x),x,80);
%t CoefficientList[Series[1/Cyclotomic[1938,x],{x,0,323}],x] (* _Harvey P. Dale_, Jul 06 2019 *)
%K sign
%O 0,1
%A _Simon Plouffe_
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