G.f. A(x) satisfies: A(x) = x + x*A(x + A(x)).

A306064

G.f. A(x) satisfies: A(x) = x + x*A(x + A(x)).

Terms

    a(0) =1a(1) =2a(2) =10a(3) =106a(4) =2130a(5) =79442a(6) =5581914a(7) =754371386a(8) =199193444258

External references