Generalized Catalan numbers 10*x*A(x)^2 -A(x) +1 -9*x =0.

A068772

Generalized Catalan numbers 10*x*A(x)^2 -A(x) +1 -9*x =0.

Terms

    a(0) =1a(1) =1a(2) =20a(3) =410a(4) =8600a(5) =184200a(6) =4020000a(7) =89205000a(8) =2008700000a(9) =45816140000

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