E.g.f. satisfies A(x) = 1/(1 - x)^(2 * A(x)).

A355779

E.g.f. satisfies A(x) = 1/(1 - x)^(2 * A(x)).

Terms

    a(0) =1a(1) =2a(2) =14a(3) =168a(4) =2912a(5) =66600a(6) =1900056a(7) =65101120a(8) =2606993728a(9) =119561789952

External references