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 A024044 #12 Sep 08 2022 08:44:48
%S A024044 1,3,-240,-6497,-65280,-389601,-1675520,-5748417,-16711680,-42784577,
%T A024044 -98951424,-210164577,-413204480,-748621857,-1207353600,-1489148801,0,
%U A024044 10204111743,57699516160,257894343903,1073911627776
%N A024044 a(n) = 4^n - n^8.
%H A024044 Vincenzo Librandi, <a href="/A024044/b024044.txt">Table of n, a(n) for n = 0..500</a>
%t A024044 Table[4^n-n^8,{n,0,20}] (* _Harvey P. Dale_, Sep 04 2018 *)
%o A024044 (Magma) [4^n-n^8: n in [0..30]]; // _Vincenzo Librandi_, Jul 02 2011
%K A024044 sign,easy
%O A024044 0,2
%A A024044 _N. J. A. Sloane_