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%I #19 Oct 14 2019 12:43:32
%S 1,20,1201,24040,1443601,28896060,1735207201,34733040080,
%T 2085717612001,41749085280100,2507030834418001,50182365773640120,
%U 3013448977252825201,60319161910830144140,3622163163627061473601,72503582434452059616160
%N Denominators of continued fraction convergents to sqrt(903).
%H Vincenzo Librandi, <a href="/A042745/b042745.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 (0,1202,0,-1).
%F G.f.: -(x^2-20*x-1) / (x^4-1202*x^2+1). - _Colin Barker_, Dec 22 2013
%t Denominator[Convergents[Sqrt[903], 30]] (* _Vincenzo Librandi_, Jan 28 2014 *)
%t LinearRecurrence[{0,1202,0,-1},{1,20,1201,24040},20] (* _Harvey P. Dale_, Oct 14 2019 *)
%Y Cf. A042744, A040872.
%K nonn,frac,easy,less
%O 0,2
%A _N. J. A. Sloane_.
%E Additional term from _Colin Barker_, Dec 22 2013
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