%I
%S 1,0,1,0,1,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
%T 0,0,0,0,0,1,0,1,0,1,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
%U 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
%N Inverse of 380th cyclotomic polynomial.
%C Periodic with period length 380.  _Ray Chandler_, Apr 03 2017
%H Ray Chandler, <a href="/A014389/b014389.txt">Table of n, a(n) for n = 0..1000</a>
%H <a href="/index/Rec#order_144">Index entries for linear recurrences with constant coefficients</a>, order 144.
%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);
%K sign
%O 0,1
%A _Simon Plouffe_
