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 A010808 #23 Sep 08 2022 08:44:37
%S A010808 0,1,1048576,3486784401,1099511627776,95367431640625,3656158440062976,
%T A010808 79792266297612001,1152921504606846976,12157665459056928801,
%U A010808 100000000000000000000,672749994932560009201,3833759992447475122176
%N A010808 20th powers: a(n) = n^20.
%H A010808 Vincenzo Librandi, <a href="/A010808/b010808.txt">Table of n, a(n) for n = 0..1000</a>
%H A010808 <a href="/index/Rec#order_21">Index entries for linear recurrences with constant coefficients</a>, signature (21, -210, 1330, -5985, 20349, -54264, 116280, -203490, 293930, -352716, 352716, -293930, 203490, -116280, 54264, -20349, 5985, -1330, 210, -21, 1).
%F A010808 Totally multiplicative sequence with a(p) = p^20 for prime p. Multiplicative sequence with a(p^e) = p^(20e). - _Jaroslav Krizek_, Nov 01 2009
%F A010808 From _Ilya Gutkovskiy_, Feb 27 2017: (Start)
%F A010808 Dirichlet g.f.: zeta(s-20).
%F A010808 Sum_{n>=1} 1/a(n) = 174611*Pi^20/1531329465290625 = A013678. (End)
%F A010808 Sum_{n>=1} (-1)^(n+1)/a(n) = 524287*zeta(20)/524288 = 91546277357*Pi^20/802857662698291200000. - _Amiram Eldar_, Oct 09 2020
%t A010808 Table[n^20, {n, 0, 20}] (* _Amiram Eldar_, Oct 09 2020 *)
%o A010808 (Magma) [n^20: n in [0..15]]; // _Vincenzo Librandi_, Jun 19 2011
%Y A010808 Cf. A013678.
%K A010808 nonn,mult,easy
%O A010808 0,3
%A A010808 _N. J. A. Sloane_