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Inverse of 644th cyclotomic polynomial.
1

%I #13 Oct 24 2023 14:00:25

%S 1,0,-1,0,1,0,-1,0,1,0,-1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,

%T 0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,-1,0,1,0,-1,0,1,0,-1,0,1,0,0,0,0,0,0,0,

%U 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0

%N Inverse of 644th cyclotomic polynomial.

%C Periodic with period length 644. - _Ray Chandler_, Apr 06 2017

%H Ray Chandler, <a href="/A014653/b014653.txt">Table of n, a(n) for n = 0..1000</a>

%H <a href="/index/Rec#order_264">Index entries for linear recurrences with constant coefficients</a>, order 264.

%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[644,x],{x,0,120}],x,120] (* _Harvey P. Dale_, Oct 24 2023 *)

%K sign

%O 0,1

%A _Simon Plouffe_