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 A016900 #26 Sep 08 2022 08:44:41
%S A016900 256,6561,38416,130321,331776,707281,1336336,2313441,3748096,5764801,
%T A016900 8503056,12117361,16777216,22667121,29986576,38950081,49787136,
%U A016900 62742241,78074896,96059601,116985856,141158161
%N A016900 a(n) = (5*n + 4)^4.
%H A016900 Vincenzo Librandi, <a href="/A016900/b016900.txt">Table of n, a(n) for n = 0..1000</a>
%H A016900 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (5, -10, 10, -5, 1).
%F A016900 From _R. J. Mathar_, Mar 01 2010: (Start)
%F A016900 a(n) = 5*a(n-1) - 10*a(n-2) + 10*a(n-3) - 5*a(n-4) + a(n-5).
%F A016900 G.f.: (256 + 5281*x + 8171*x^2 + 1291*x^3 + x^4)/(1 - x)^5. (End)
%F A016900 a(n) = A016897(n)^4 = A000583(A016897(n)). - _Wesley Ivan Hurt_, Feb 15 2014
%p A016900 A016900:=n->(5*n + 4)^4; seq(A016900(n), n=0..50); # _Wesley Ivan Hurt_, Feb 15 2014
%t A016900 Table[(5 n + 4)^4, {n, 0, 50}] (* _Wesley Ivan Hurt_, Feb 15 2014 *)
%o A016900 (Magma) [(5*n+4)^4: n in [0..50]]; // _Vincenzo Librandi_, May 02 2011
%o A016900 (PARI) a(n)=(5*n+4)^4 \\ _Charles R Greathouse IV_, Feb 18 2014
%Y A016900 Cf. A000583, A016897.
%K A016900 nonn,easy
%O A016900 0,1
%A A016900 _N. J. A. Sloane_