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 A042001 Denominators of continued fraction convergents to sqrt(523). 2

%I

%S 1,1,7,8,15,23,107,237,818,11689,12507,274336,286843,4290138,13157257,

%T 30604652,135575865,166180517,301756382,467936899,3109377776,

%U 3577314675,160511223476,164088538151,1145042452382,1309130990533,2454173442915,3763304433448

%N Denominators of continued fraction convergents to sqrt(523).

%H Vincenzo Librandi, <a href="/A042001/b042001.txt">Table of n, a(n) for n = 0..200</a>

%H <a href="/index/Rec#order_44">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, 163620601252, 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) = 163620601252*a(n-22) - a(n-44) for n>43. [_Bruno Berselli_, Jan 12 2014]

%t Denominator[Convergents[Sqrt[523], 40]] (* _Vincenzo Librandi_, Jan 12 2014 *)

%Y Cf. A042000.

%K nonn,frac,easy

%O 0,3

%A _N. J. A. Sloane_.

%E More terms from _Vincenzo Librandi_, Jan 12 2014

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Last modified March 19 11:03 EDT 2019. Contains 321329 sequences. (Running on oeis4.)