%I #14 Jun 26 2022 23:35:53
%S 1,1,2,5,7,33,40,73,332,405,1142,1547,2689,168265,170954,339219,
%T 849392,1188611,5603836,6792447,12396283,56377579,68773862,193925303,
%U 262699165,456624468,28573416181,29030040649,57603456830,144236954309,201840411139
%N Denominators of continued fraction convergents to sqrt(997).
%H Vincenzo Librandi, <a href="/A042931/b042931.txt">Table of n, a(n) for n = 0..200</a>
%H <a href="/index/Rec#order_26">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 169812, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).
%F a(n) = 28836115346*a(n-26) - a(n-52) for n>51. - _Vincenzo Librandi_, Feb 01 2014
%t Denominator[Convergents[Sqrt[997], 30]] (* _Harvey P. Dale_, Jul 10 2013 *)
%Y Cf. A042930, A040965.
%K nonn,frac,easy
%O 0,3
%A _N. J. A. Sloane_
%E More terms from _Vincenzo Librandi_, Feb 01 2014