%I #19 Jan 07 2018 04:16:33
%S 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,
%T 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,
%U -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
%N Inverse of 1541st cyclotomic polynomial.
%C Periodic with period length 1541. - _Ray Chandler_, Apr 07 2017
%H Ray Chandler, <a href="/A015550/b015550.txt">Table of n, a(n) for n = 0..2000</a>
%H <a href="/index/Rec#order_1452">Index entries for linear recurrences with constant coefficients</a>, order 1452.
%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[1541, x], {x, 0, 100}], x] (* _G. C. Greubel_, Jan 06 2018 *)
%o (PARI) Vec(1/polcyclo(1541) + O(x^100)) \\ _Michel Marcus_, Jan 07 2018
%K sign
%O 0,1
%A _Simon Plouffe_
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