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 A173535 #23 Aug 29 2025 15:55:00
%S A173535 1,6,66,786,9426,113106,1357266,16287186,195446226,2345354706,
%T A173535 28144256466,337731077586,4052772931026,48633275172306,
%U A173535 583599302067666,7003191624811986,84038299497743826,1008459593972925906,12101515127675110866
%N A173535 a(n) = (1/11) * (5*12^n + 6).
%H A173535 Vincenzo Librandi, <a href="/A173535/b173535.txt">Table of n, a(n) for n = 0..900</a>
%H A173535 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (13, -12).
%F A173535 a(n) = 12*a(n-1) - 6, a(0)=1.
%F A173535 G.f.: (1-7*x)/((1-x)*(1-12*x)). - _Vincenzo Librandi_, Sep 28 2013
%t A173535 Table[(1/11) (5 12^n + 6), {n, 0, 20}] (* or *) CoefficientList[Series[(1 - 7 x)/((1 - x) (1 - 12 x)), {x, 0, 40}], x] (* _Vincenzo Librandi_, Sep 28 2013 *)
%o A173535 (Magma) [(1/11)*(5*12^n + 6): n in [0..20]]; // _Vincenzo Librandi_, Sep 28 2013
%Y A173535 Essentially the same as A127858.
%K A173535 nonn,easy,changed
%O A173535 0,2
%A A173535 _Vincenzo Librandi_, Nov 23 2010
%E A173535 Changed offset from 1 to 0 by, added 1 by _Vincenzo Librandi_, Sep 28 2013