%I #17 Jul 08 2018 13:45:01
%S 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,
%T 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,-1,-1,-1,-1,
%U -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
%N Inverse of 1121st cyclotomic polynomial.
%C Periodic with period length 1121. - _Ray Chandler_, Apr 07 2017
%H Ray Chandler, <a href="/A015130/b015130.txt">Table of n, a(n) for n = 0..2000</a>
%H <a href="/index/Rec#order_1044">Index entries for linear recurrences with constant coefficients</a>, order 1044.
%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[1121,x],{x,0,120}],x] (* _Harvey P. Dale_, Jul 08 2018 *)
%K sign
%O 0,1
%A _Simon Plouffe_