%I #17 Jan 20 2020 19:26:24
%S 1,4,241,968,58321,234252,14113441,56688016,3415394401,13718265620,
%T 826511331601,3319763592024,200012326853041,803369071004188,
%U 48402156587104321,194411995419421472,11713121881752392641,47046899522428992036,2834527093227491914801
%N Denominators of continued fraction convergents to sqrt(915).
%H Vincenzo Librandi, <a href="/A042769/b042769.txt">Table of n, a(n) for n = 0..200</a>
%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (0, 242, 0, -1).
%F G.f.: -(x^2-4*x-1) / (x^4-242*x^2+1). - _Colin Barker_, Dec 23 2013
%t Denominator[Convergents[Sqrt[915], 30]] (* _Vincenzo Librandi_, Jan 28 2014 *)
%t LinearRecurrence[{0,242,0,-1},{1,4,241,968},30] (* _Harvey P. Dale_, Jan 20 2020 *)
%Y Cf. A042768, A040884.
%K nonn,frac,easy
%O 0,2
%A _N. J. A. Sloane_.
%E More terms from _Colin Barker_, Dec 23 2013
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