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 A019327 #15 Feb 26 2024 09:14:28
%S A019327 9,8,10,91,82,7381,73,597871,6562,532171,5905,3922632451,6481,
%T A019327 317733228541,478297,38316961,43046722,2084647712458321,530713,
%U A019327 168856464709124011,42521761,251393376241,3138105961
%N A019327 Cyclotomic polynomials at x=9.
%H A019327 Paolo Xausa, <a href="/A019327/b019327.txt">Table of n, a(n) for n = 0..1000</a>
%H A019327 <a href="/index/Cy#CyclotomicPolynomialsValuesAtX">Index entries for cyclotomic polynomials, values at X</a>
%p A019327 with(numtheory,cyclotomic); f := n->subs(x=9,cyclotomic(n,x)); seq(f(i),i=0..64);
%t A019327 Join[{9}, Cyclotomic[Range[50], 9]] (* _Paolo Xausa_, Feb 26 2024 *)
%K A019327 nonn
%O A019327 0,1
%A A019327 _Simon Plouffe_