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 A120948 #14 Sep 08 2022 08:45:26
%S A120948 2,16,50,176,738,3408,16402,80368,397250,1972880,9824754,49005360,
%T A120948 244672162,1222297552,6108298706,30531927152,152630937474,
%U A120948 763068593424,3815084686258,19074648589744,95370918425186,476847618556496
%N A120948 8n+3^n+5^n.
%H A120948 Vincenzo Librandi, <a href="/A120948/b120948.txt">Table of n, a(n) for n = 0..1000</a>
%H A120948 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (10,-32,38,-15).
%F A120948 G.f.: 2*(1-2*x-23*x^2+56*x^3)/((1-5*x)*(1-3*x)*(1-x)^2). - _Vincenzo Librandi_, Feb 26 2013
%t A120948 CoefficientList[Series[2 (1 - 2 x - 23 x^2 + 56 x^3)/((1-5 x) (1 - 3 x) (1 - x)^2), {x, 0, 30}], x] (* _Vincenzo Librandi_, Feb 26 2013 *)
%t A120948 Table[8 n + 3^n + 5^n, {n, 0, 25}] (* _Bruno Berselli_, Feb 27 2013 *)
%o A120948 (PARI) for(n=0, 25, print1(8*n+3^n+5^n", ")); \\ _Bruno Berselli_, Feb 27 2013
%o A120948 (Magma) [8*n+3^n+5^n: n in [0..25]]; // _Bruno Berselli_, Feb 27 2013
%Y A120948 Cf. A074606, A005058.
%K A120948 nonn,easy
%O A120948 0,1
%A A120948 _Mohammad K. Azarian_, Aug 19 2006
%E A120948 Edited by _Ray Chandler_, Sep 06 2006