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 A202280 #11 Aug 01 2015 09:59:34
%S A202280 0,140634693,486075138127903440,1680019594496931198149880507,
%T A202280 5806645138782932871709060110684609120,
%U A202280 20069484831126506853711147766546649419638369093,69366081749442007616768328339033006654521310003044446320
%N A202280 y-values in the solutions to x^2 - 151*y^2 = 1.
%D A202280 A. H. Beiler, Recreations in the Theory of Numbers, Dover, NY, 1996, p. 248.
%H A202280 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (3456296080, -1).
%F A202280 a(n) = 3456296080*a(n-1) - a(n-2) with a(1) = 0 and a(2) = 140634693.
%F A202280 G.f.: 140634693*x^2/(1 - 3456296080*x + x^2).
%t A202280 LinearRecurrence[{3456296080, -1}, {0, 140634693}, 7]
%Y A202280 Cf. A041277, A082394.
%K A202280 nonn,easy
%O A202280 1,2
%A A202280 _Arkadiusz Wesolowski_, Dec 15 2011