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Denominators of continued fraction convergents to sqrt(611).
2

%I #13 May 19 2019 02:25:30

%S 1,1,3,4,7,32,71,103,277,1211,1488,2699,6886,9585,466966,476551,

%T 1420068,1896619,3316687,15163367,33643421,48806788,131256997,

%U 573834776,705091773,1278926549,3262944871,4541871420,221272773031,225814644451,672902061933

%N Denominators of continued fraction convergents to sqrt(611).

%H Vincenzo Librandi, <a href="/A042173/b042173.txt">Table of n, a(n) for n = 0..200</a>

%H <a href="/index/Rec#order_28">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 473852, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

%F a(n) = 473852*a(n-14) - a(n-28) for n > 27. - _Vincenzo Librandi_, Jan 16 2014

%t Denominator[Convergents[Sqrt[611], 30]] (* _Vincenzo Librandi_, Jan 16 2014 *)

%Y Cf. A042172.

%K nonn,frac,easy

%O 0,3

%A _N. J. A. Sloane_

%E More terms from _Vincenzo Librandi_, Jan 16 2014