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A042565 Denominators of continued fraction convergents to sqrt(811). 2

%I #11 Mar 19 2017 12:12:11

%S 1,2,21,23,205,228,433,1094,1527,2621,4148,15065,94538,1716749,

%T 1811287,8961897,10773184,30508265,41281449,1145107388,1186388837,

%U 3517885062,4704273899,22334980658,27039254557,509041562684,3081288630661,9752907454667,12834196085328

%N Denominators of continued fraction convergents to sqrt(811).

%H Vincenzo Librandi, <a href="/A042565/b042565.txt">Table of n, a(n) for n = 0..200</a>

%H <a href="/index/Rec#order_76">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, 0, 0, 0, 0, 0, 0, 0, 0, 2764144327157232820, 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, 0, 0, 0, 0, 0, 0, 0, 0, -1).

%F a(n) = 2764144327157232820*a(n-38) - a(n-76) for n>75. - _Vincenzo Librandi_, Jan 25 2014

%t Denominator[Convergents[Sqrt[811], 30]] (* _Vincenzo Librandi_, Jan 25 2014 *)

%Y Cf. A040782, A042564.

%K nonn,frac,easy

%O 0,2

%A _N. J. A. Sloane_.

%E More terms from _Vincenzo Librandi_, Jan 25 2014

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Last modified March 29 06:44 EDT 2024. Contains 371265 sequences. (Running on oeis4.)