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 A350984 #18 Sep 03 2022 22:26:20
%S A350984 0,18,612,20790,706248,23991642,815009580,27686334078,940520349072,
%T A350984 31950005534370,1085359667819508,36870278700328902,
%U A350984 1252504116143363160,42548269670174018538,1445388664669773267132,49100666329102117063950,1667977266524802206907168,56662126395514172917779762,1924844320180957076997604740
%N A350984 a(0)=0, a(1)=18, a(2)=612; a(n) = 35*(a(n-1)-a(n-2))+a(n-3).
%D A350984 P.-F. Teilhet, Query 2376, L'Intermédiaire des Mathématiciens, 11 (1904), 138-139.
%H A350984 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (34,-1).
%F A350984 From _Chai Wah Wu_, Mar 08 2022: (Start)
%F A350984 a(n) = 34*a(n-1) - a(n-2) for n > 1.
%F A350984 G.f.: 18*x/(x^2 - 34*x + 1). (End)
%t A350984 CoefficientList[Series[18*x/(x^2 - 34*x + 1), {x, 0, 20}], x] (* _Wesley Ivan Hurt_, Sep 03 2022 *)
%Y A350984 Cf. A001541, A001542, A350983.
%Y A350984 Equals 18*A029547(n-1) for n >= 1.
%Y A350984 Equals 18*A091761.
%K A350984 nonn,easy
%O A350984 0,2
%A A350984 _N. J. A. Sloane_, Mar 08 2022