Generalized Catalan numbers 4*x*A(x)^2 -A(x)+1-3*x=0.

A068766

Generalized Catalan numbers 4*x*A(x)^2 -A(x)+1-3*x=0.

Terms

    a(0) =1a(1) =1a(2) =8a(3) =68a(4) =608a(5) =5664a(6) =54528a(7) =538944a(8) =5441024a(9) =55889408a(10) =582348800a(11) =6140864512a(12) =65414742016a(13) =702897995776

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