This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A015444 #15 Jun 02 2020 14:01:17
%S A015444 1,-1,0,0,0,1,-1,1,-1,0,1,-1,1,-1,1,0,-1,1,-1,1,0,0,0,-1,1,0,0,0,0,0,
%T A015444 0,0,0,0,0,0,0,0,0,0,0,1,-1,0,0,0,1,-1,1,-1,0,1,-1,1,-1,1,0,-1,1,-1,1,
%U A015444 0,0,0,-1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
%N A015444 Inverse of 1435th cyclotomic polynomial.
%C A015444 Periodic with period length 1435. - _Ray Chandler_, Apr 07 2017
%H A015444 Ray Chandler, <a href="/A015444/b015444.txt">Table of n, a(n) for n = 0..2000</a>
%H A015444 <a href="/index/Rec#order_960">Index entries for linear recurrences with constant coefficients</a>, order 960.
%H A015444 <a href="/index/Pol#poly_cyclo_inv">Index to sequences related to inverse of cyclotomic polynomials</a>
%p A015444 with(numtheory,cyclotomic); c := n->series(1/cyclotomic(n,x),x,80);
%t A015444 CoefficientList[Series[1/Cyclotomic[1435,x],{x,0,100}],x] (* _Harvey P. Dale_, Jun 02 2020 *)
%o A015444 (PARI) Vec(1/polcyclo(1435)+O(x^99)) \\ _Charles R Greathouse IV_, Mar 24 2014
%K A015444 sign
%O A015444 0,1
%A A015444 _Simon Plouffe_