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 A128043 #12 Sep 08 2022 08:45:30
%S A128043 12,360,6480,88128,1010880,10357632,97977600,873400320,7437339648,
%T A128043 61070837760,486873649152,3787601264640,28864133775360,
%U A128043 216128364576768,1593927097712640,11600403939459072,83448431062548480
%N A128043 (n^3+n)*6^n.
%H A128043 Vincenzo Librandi, <a href="/A128043/b128043.txt">Table of n, a(n) for n = 1..1000</a>
%F A128043 G.f.: 12*x*(1 + 6*x + 36*x^2)/(1 - 6*x)^4. - _Vincenzo Librandi_, Feb 22 2013
%t A128043 Table[(n^3 + n) * 6^n, {n, 30}] (* or *) CoefficientList[Series[12 (1 + 6 x + 36 x^2)/(1 - 6 x)^4, {x, 0, 30}], x] (* _Vincenzo Librandi_, Feb 22 2013 *)
%o A128043 (Magma) [(n^3 + n)*6^n: n in [1..20]]; // _Vincenzo Librandi_, Feb 22 2013
%Y A128043 Cf. A128796, A128960, A128985, A129002.
%K A128043 nonn,easy
%O A128043 1,1
%A A128043 _Mohammad K. Azarian_, May 02 2007