A132607 - OEIS

%I #21 Feb 27 2024 03:00:19

%S 0,99,39600,15760899,6272798400,2496558002499,993623812196400,

%T 395459780696164899,157391999093261433600,62641620179337354408099,

%U 24931207439377173792990000,9922557919251935832255612099

%N X-values of solutions to the equation X*(X + 1) - 11*Y^2 = 0.

%H Harvey P. Dale, <a href="/A132607/b132607.txt">Table of n, a(n) for n = 0..384</a>

%H <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (399,-399,1).

%F a(n) = 398*a(n-1) - a(n-2) + 198; a(0)=0, a(1)=99.

%F G.f.: -99*x*(x+1)/((x-1)*(x^2 - 398*x + 1)). - _Colin Barker_, Oct 25 2012

%t LinearRecurrence[{399,-399,1},{0,99,39600},20] (* _Harvey P. Dale_, Aug 12 2022 *)

%Y Cf. A007654.

%K nonn,easy

%O 0,2

%A _Mohamed Bouhamida_, Nov 14 2007

%E More terms from _Paolo P. Lava_, Oct 07 2008