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 A132607 #21 Feb 27 2024 03:00:19
%S A132607 0,99,39600,15760899,6272798400,2496558002499,993623812196400,
%T A132607 395459780696164899,157391999093261433600,62641620179337354408099,
%U A132607 24931207439377173792990000,9922557919251935832255612099
%N A132607 X-values of solutions to the equation X*(X + 1) - 11*Y^2 = 0.
%H A132607 Harvey P. Dale, <a href="/A132607/b132607.txt">Table of n, a(n) for n = 0..384</a>
%H A132607 <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (399,-399,1).
%F A132607 a(n) = 398*a(n-1) - a(n-2) + 198; a(0)=0, a(1)=99.
%F A132607 G.f.: -99*x*(x+1)/((x-1)*(x^2 - 398*x + 1)). - _Colin Barker_, Oct 25 2012
%t A132607 LinearRecurrence[{399,-399,1},{0,99,39600},20] (* _Harvey P. Dale_, Aug 12 2022 *)
%Y A132607 Cf. A007654.
%K A132607 nonn,easy
%O A132607 0,2
%A A132607 _Mohamed Bouhamida_, Nov 14 2007
%E A132607 More terms from _Paolo P. Lava_, Oct 07 2008