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%I #10 Jul 17 2023 18:51:11
%S 1,1,8,17,25,42,67,913,2806,6525,15856,85805,101661,187466,851525,
%T 8702716,35662389,44365105,80027494,444502575,969032644,2382567863,
%U 8116736233,107900138892,116016875125,223917014017,339933889142,903784792301,6666427435249,7570212227550
%N Denominators of continued fraction convergents to sqrt(436).
%H Vincenzo Librandi, <a href="/A041831/b041831.txt">Table of n, a(n) for n = 0..200</a>
%H <a href="/index/Rec#order_60">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 316141343972498, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
%F a(n) = 316141343972498*a(n-30) - a(n-60) for n>59. - _Vincenzo Librandi_, Dec 25 2013
%t Denominator[Convergents[Sqrt[436], 30]] (* _Vincenzo Librandi_, Dec 25 2013 *)
%Y Cf. A041830.
%K nonn,frac,easy
%O 0,3
%A _N. J. A. Sloane_.
%E More terms from _Vincenzo Librandi_, Dec 25 2013