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 A189745 #31 Feb 18 2024 03:34:44
%S A189745 5,1,10,51,265,1376,7145,37101,192650,1000351,5194405,26972376,
%T A189745 140056285,727253801,3776325290,19608880251,101820726545,528712512976,
%U A189745 2745383291425,14255628970101,74023528141930,384373269679751,1995889876540685,10363822652383176
%N A189745 a(n) = 5*a(n-1) + a(n-2); with a(1)=5, a(2)=1.
%H A189745 Vincenzo Librandi, <a href="/A189745/b189745.txt">Table of n, a(n) for n = 1..100</a>
%H A189745 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (5,1).
%F A189745 G.f.: x*(5-24*x)/(1-5*x-x^2). - _Bruno Berselli_, May 24 2011
%t A189745 LinearRecurrence[{5,1},{5,1},40]
%o A189745 (Maxima) a[1]:5$ a[2]:1$ a[n]:=5*a[n-1]+a[n-2]$ makelist(a[n], n, 1, 24); /*
%o A189745 _Bruno Berselli_, May 24 2011 */
%Y A189745 Cf. A000045, A000079, A105476, A159612, A080040, A135522, A103435, A189732, A189734, A189735, A189736, A189737, A189738, A189739, A189741, A189742, A189743, A189744, A189746, A189747, A189748, A189749.
%K A189745 nonn,easy
%O A189745 1,1
%A A189745 _Harvey P. Dale_, Apr 26 2011