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%I #13 Jun 13 2015 00:49:45
%S 1,1,5,6,317,323,1609,1932,102073,104005,518093,622098,32867189,
%T 33489287,166824337,200313624,10583132785,10783446409,53716918421,
%U 64500364830,3407735889581,3472236254411,17296680907225
%N Denominators of continued fraction convergents to sqrt(720).
%H Vincenzo Librandi, <a href="/A042387/b042387.txt">Table of n, a(n) for n = 0..200</a>
%H <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (0,0,0,322,0,0,0,-1).
%F G.f.: -(x^2-x-1)*(x^4+6*x^2+1)/((x^2-4*x-1)*(x^2+4*x-1)*(x^4+18*x^2+1)). [_Colin Barker_, Aug 09 2012]
%t Denominator[Convergents[Sqrt[720], 30]] (* _Vincenzo Librandi_, Oct 25 2013 *)
%Y Cf. A042386.
%K nonn,cofr,frac,easy
%O 0,3
%A _N. J. A. Sloane_.
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