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%I #20 Dec 23 2019 12:30:43
%S 1,2,5,262,529,1320,69169,139658,348485,18260878,36870241,92001360,
%T 4820940961,9733883282,24288707525,1272746674582,2569782056689,
%U 6412310787960,336009943030609,678432196849178,1692874336728965,88707897706755358
%N Denominators of continued fraction convergents to sqrt(697).
%H Vincenzo Librandi, <a href="/A042341/b042341.txt">Table of n, a(n) for n = 0..200</a>
%H <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 264, 0, 0, 1).
%F G.f.: -(x^4-2*x^3+5*x^2+2*x+1) / (x^6+264*x^3-1). - _Colin Barker_, Dec 08 2013
%t Denominator[Convergents[Sqrt[697], 30]] (* _Vincenzo Librandi_, Jan 20 2014 *)
%t LinearRecurrence[{0,0,264,0,0,1},{1,2,5,262,529,1320},30] (* _Harvey P. Dale_, Dec 23 2019 *)
%Y Cf. A042340, A040670.
%K nonn,frac,easy
%O 0,2
%A _N. J. A. Sloane_.
%E More terms from _Colin Barker_, Dec 08 2013
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