Expansion of g.f. A(x) satisfying A( A(x^2) + C(x) ) = x, where C(x) = x + C(x)^2 is the Catalan function (A000108).

A373311

Expansion of g.f. A(x) satisfying A( A(x^2) + C(x) ) = x, where C(x) = x + C(x)^2 is the Catalan function (A000108).

Terms

    a(0) =1a(1) =-2a(2) =6a(3) =-23a(4) =90a(5) =-370a(6) =1568a(7) =-6802a(8) =30032a(9) =-134422a(10) =608136a(11) =-2774480a(12) =12741844a(13) =-58820272a(14) =272617696a(15) =-1267318854a(16) =5904152560a(17) =-27545442786a(18) =128610298720a(19) =-600579852616

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