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 A024039 #16 Sep 08 2022 08:44:48
%S A024039 1,3,8,37,192,899,3880,16041,65024,261415,1047576,4192973,16775488,
%T A024039 67106667,268432712,1073738449,4294963200,17179864271,68719470904,
%U A024039 274877900085,1099511619776,4398046501843,17592186033768,70368744165497,281474976696832
%N A024039 a(n) = 4^n - n^3.
%H A024039 Vincenzo Librandi, <a href="/A024039/b024039.txt">Table of n, a(n) for n = 0..500</a>
%H A024039 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (8, -22, 28, -17, 4).
%F A024039 G.f.: (-1 - 5*x^4 - 11*x^3 - 6*x^2 + 5*x)/((4*x-1)*(x-1)^4). - Maksym Voznyy (voznyy(AT)mail.ru), Aug 13 2009
%F A024039 a(n) = 8*a(n-1) - 22*a(n-2) + 28*a(n-3) - 17*a(n-4) + 4*a(n-5); a(0)=1, a(1)=3, a(2)=8, a(3)=37, a(4)=192. - _Harvey P. Dale_, Jul 26 2011
%t A024039 Table[4^n-n^3,{n,0,30}] (* or *) LinearRecurrence[{8,-22,28,-17,4},{1,3,8,37,192},31] (* _Harvey P. Dale_, Jul 26 2011 *)
%o A024039 (Magma) [4^n-n^3: n in [0..30]]; // _Vincenzo Librandi_, Jul 02 2011
%K A024039 nonn,easy
%O A024039 0,2
%A A024039 _N. J. A. Sloane_
%E A024039 More terms from _Harvey P. Dale_, Jul 26 2011