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

A141209

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

Terms

    a(0) =1a(1) =1a(2) =2a(3) =9a(4) =64a(5) =620a(6) =7626a(7) =113792a(8) =1997192a(9) =40316544a(10) =920271840a(11) =23438308872a(12) =658947505272

External references