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 A063706 #15 Feb 27 2024 06:49:17
%S A063706 1,0,1,2,2,7,1,20,4,10,2,143,2,376,5,12,21,2583,7,6764,15,75,34,46367,
%T A063706 18,7435,89,2618,104,832039,25,2178308,987,3400,610,20161,136,
%U A063706 39088168,1597,23229,861,267914295,182,701408732,4895,35921,10946,4807526975
%N A063706 Cyclotomic polynomials Phi_n at x=phi, divided by sqrt(5) and rounded to nearest integer (where phi = tau = (sqrt(5)+1)/2).
%H A063706 Paolo Xausa, <a href="/A063706/b063706.txt">Table of n, a(n) for n = 0..1000</a>
%p A063706 with(numtheory); Phi_at_x := (n,y) -> subs(x=y,cyclotomic(n,x)); [seq(round(evalf(simplify(Phi_at_x(j,(sqrt(5)+1)/2))/(sqrt(5)))),j=0..120)];
%t A063706 Join[{1}, Round[Simplify[Cyclotomic[Range[50], GoldenRatio]]/Sqrt[5]]] (* _Paolo Xausa_, Feb 27 2024 *)
%Y A063706 Cf. A063705, A051258, A063704, A063708.
%K A063706 nonn
%O A063706 0,4
%A A063706 _Antti Karttunen_, Aug 03 2001
%E A063706 a(43) and a(47) corrected by _Sean A. Irvine_, May 08 2023