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%I #18 Jan 27 2020 01:22:32
%S 1,3,4,35,179,214,393,1393,10144,11537,21681,163304,511593,674897,
%T 1186490,6607347,54045266,60652613,236003105,14692845123,44314538474,
%U 59007383597,516373607250,2640875419847,3157249027097
%N Denominators of continued fraction convergents to sqrt(977).
%C The Hankel transform (see A001906 for definition) of this sequence forms the sequence A047656(n+1)= [1,3,27,729,59049,14348907,...] . - _Philippe Deléham_, Aug 29 2006
%H Harvey P. Dale, <a href="/A042891/b042891.txt">Table of n, a(n) for n = 0..1000</a>
%H <a href="/index/Rec#order_38">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, 14753497736, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).
%F The Hankel transform (see A001906 for definition) of this sequence forms the sequence A047656(n+1)= [1,3,27,729,59049,14348907,...]. - _Philippe Deléham_, Aug 29 2006
%F a(n) = 14753497736*a(n-19) - a(n-38) for n > 37. - _Vincenzo Librandi_, Jan 31 2014
%t Denominator[Convergents[Sqrt[977], 40]] (* _Harvey P. Dale_, May 09 2012 *)
%Y Cf. A042890, A040945.
%K nonn,frac,easy
%O 0,2
%A _N. J. A. Sloane_
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