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Denominators of continued fraction convergents to sqrt(731).
2

%I #16 Jun 13 2015 00:49:45

%S 1,27,1459,39420,2130139,57553173,3110001481,84027593160,

%T 4540600032121,122680228460427,6629272936895179,179113049524630260,

%U 9678733947266929219,261504929625731719173,14130944933736779764561,381797018140518785362320

%N Denominators of continued fraction convergents to sqrt(731).

%H Vincenzo Librandi, <a href="/A042407/b042407.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 (0,1460,0,-1).

%F G.f.: -(x^2-27*x-1) / (x^4-1460*x^2+1). - _Colin Barker_, Dec 11 2013

%t Denominator[Convergents[Sqrt[731], 30]] (* _Vincenzo Librandi_, Jan 21 2014 *)

%Y Cf. A042406, A040703.

%K nonn,frac,easy

%O 0,2

%A _N. J. A. Sloane_.

%E a(15) from _Colin Barker_, Dec 11 2013