G.f. A(x) satisfies: 4*A(x) = A(A(A(x))) + 3*x + x^2 with A(0)=0.
A138913
G.f. A(x) satisfies: 4*A(x) = A(A(A(x))) + 3*x + x^2 with A(0)=0.
Terms
- a(0) =1a(1) =1a(2) =6a(3) =99a(4) =2362a(5) =70484a(6) =2463460a(7) =97309959a(8) =4251047468a(9) =202470323828
External references
- oeis: A138913