%I #15 Mar 19 2017 09:02:30
%S 1,1,3,4,7,11,18,47,65,2517,2582,7681,10263,17944,28207,46151,120509,
%T 166660,6453589,6620249,19694087,26314336,46008423,72322759,118331182,
%U 308985123,427316305,16547004713,16974321018,50495646749,67469967767,117965614516
%N Denominators of continued fraction convergents to sqrt(389).
%H Vincenzo Librandi, <a href="/A041739/b041739.txt">Table of n, a(n) for n = 0..200</a>
%H <a href="/index/Rec#order_18">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 0, 0, 0, 2564, 0, 0, 0, 0, 0, 0, 0, 0, 1).
%F G.f.: -(x^16 -x^15 +3*x^14 -4*x^13 +7*x^12 -11*x^11 +18*x^10 -47*x^9 +65*x^8 +47*x^7 +18*x^6 +11*x^5 +7*x^4 +4*x^3 +3*x^2 +x +1) / (x^18 +2564*x^9 -1). - _Colin Barker_, Nov 23 2013
%t Denominator[Convergents[Sqrt[389], 30]] (* _Vincenzo Librandi_, Dec 23 2013 *)
%Y Cf. A041738, A040369.
%K nonn,frac,easy
%O 0,3
%A _N. J. A. Sloane_.
%E More terms from _Colin Barker_, Nov 23 2013