A014174 - OEIS

%I #16 Apr 03 2017 14:32:27

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

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

%U -1,0,0,-1,1,0,-1,1,-1,0,1,-1,0,0,-1,1,0,-1

%N Inverse of 165th cyclotomic polynomial.

%C Periodic with period length 165. - _Ray Chandler_, Apr 03 2017

%H Vincenzo Librandi, <a href="/A014174/b014174.txt">Table of n, a(n) for n = 0..1000</a>

%H <a href="/index/Rec#order_80">Index entries for linear recurrences with constant coefficients</a>, signature (-1, -1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, -1, -2, -2, -1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, -1, -2, -2, -2, -1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, -1, -2, -2, -2, -1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, -1, -2, -2, -1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, -1, -1, -1).

%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[165, x], {x, 0, 200}], x] (* _Vincenzo Librandi_, Apr 06 2014 *)

%Y Cf. similar sequences listed in A240328, A240467.

%K sign,easy

%O 0,1

%A _Simon Plouffe_