%I #16 Sep 08 2022 08:45:52
%S 0,413,2874480,20006380387,139244404619040,969141036142138013,
%T 6745221472304875951440,46946740478100900479884387,
%U 326749306982360795035119382080
%N y-values in the solution to x^2-71*y^2=1.
%C The corresponding values of x of this Pell equation are in A176380.
%H Vincenzo Librandi, <a href="/A176381/b176381.txt">Table of n, a(n) for n = 1..200</a>
%H <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (6960,-1).
%F a(n) = 6960*a(n-1)-a(n-2) with a(1)=0, a(2)=413.
%F G.f.: 413*x^2/(1-6960*x+x^2).
%t LinearRecurrence[{6960,-1},{0,413},20]
%o (Magma) I:=[0,413]; [n le 2 select I[n] else 6960*Self(n-1)-Self(n-2): n in [1..20]];
%Y Cf. A176380.
%K nonn,easy
%O 1,2
%A _Vincenzo Librandi_, Apr 16 2010
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