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%I #15 Mar 19 2017 12:38:39
%S 1,1,6,7,13,20,113,133,7827,7960,47627,55587,103214,158801,897219,
%T 1056020,62146379,63202399,378158374,441360773,819519147,1260879920,
%U 7123918747,8384798667,493442241433,501827040100,3002577441933,3504404482033,6506981923966
%N Denominators of continued fraction convergents to sqrt(891).
%H Vincenzo Librandi, <a href="/A042723/b042723.txt">Table of n, a(n) for n = 0..200</a>
%H <a href="/index/Rec#order_16">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 0, 0, 7940, 0, 0, 0, 0, 0, 0, 0, -1).
%F G.f.: -(x^2-x-1)*(x^4+7*x^2+1)*(x^8+19*x^4+1) / (x^16-7940*x^8+1). - _Colin Barker_, Dec 22 2013
%t Denominator[Convergents[Sqrt[891], 30]] (* _Vincenzo Librandi_, Jan 27 2014 *)
%Y Cf. A042722, A040861.
%K nonn,frac,easy
%O 0,3
%A _N. J. A. Sloane_.
%E More terms from _Colin Barker_, Dec 22 2013
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