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Q_n(4) (see A104035).
1

%I #6 Sep 29 2013 04:24:32

%S 1,4,33,404,6597,134644,3297693,94228004,3077100777,113046200164,

%T 4614532495353,207201136625204,10149511013598957,538592387976486484,

%U 30779388439090380213,1884616483302733144004,123087714448128536653137,8541524061361098605073604

%N Q_n(4) (see A104035).

%F G.f.: 1/Q(0), where Q(k) = 1 - 4*x*(2*k+1) - 17*x^2*(k+1)^2/Q(k+1); (continued fraction). - _Sergei N. Gladkovskii_, Sep 28 2013

%K nonn

%O 0,2

%A _N. J. A. Sloane_, Nov 06 2009