G.f. satisfies: A(x - 2*A(x)^2) = x + 3*A(x)^2.

A277301

G.f. satisfies: A(x - 2*A(x)^2) = x + 3*A(x)^2.

Terms

    a(0) =1a(1) =5a(2) =70a(3) =1425a(4) =35410a(5) =999210a(6) =30855820a(7) =1020407105a(8) =35642665050

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