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 A198401 #19 Aug 26 2023 17:55:37
%S A198401 1,9,320,7073,69632,423393,1941760,7861953,33554432,177264449,
%T A198401 1173741824,8804293473,69149458432,550571544609,4399522300160,
%U A198401 35186934979457,281479271677952,2251806789442689,18014409529442560,144115205059418913
%N A198401 a(n) = 8^n + n^8.
%H A198401 Vincenzo Librandi, <a href="/A198401/b198401.txt">Table of n, a(n) for n = 0..1000</a>
%H A198401 <a href="/index/Rec#order_10">Index entries for linear recurrences with constant coefficients</a>, signature (17,-108,372,-798,1134,-1092,708,-297,73,-8).
%F A198401 G.f.: -(9*x^9 +1966*x^8 +34133*x^7 +120575*x^6 +109459*x^5 +18599*x^4 -2233*x^3 -275*x^2 +8*x -1) / ((x -1)^9*(8*x -1)). - _Colin Barker_, Sep 13 2013
%t A198401 f[n_] := 8^n + n^8; f[Range[0, 30]]
%t A198401 LinearRecurrence[{17,-108,372,-798,1134,-1092,708,-297,73,-8},{1,9,320,7073,69632,423393,1941760,7861953,33554432,177264449},30] (* _Harvey P. Dale_, Aug 26 2023 *)
%o A198401 (Magma) [8^n+n^8: n in [0..20]]
%o A198401 (PARI) a(n)=8^n+n^8 \\ _Charles R Greathouse IV_, Oct 16 2015
%Y A198401 Cf. A001580, A001585, A001589, A001593, A001594, A001596, A177068, A177069, A185277.
%K A198401 nonn,easy
%O A198401 0,2
%A A198401 _Vincenzo Librandi_, Oct 27 2011