G.f. satisfies: A(x) = 1 + x*A(x)^3*A(x*A(x)^3).
A215505
G.f. satisfies: A(x) = 1 + x*A(x)^3*A(x*A(x)^3).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =25a(4) =200a(5) =1888a(6) =20158a(7) =237357a(8) =3032188a(9) =41554144a(10) =605964370a(11) =9345693140a(12) =151727166822
External references
- oeis: A215505