G.f. A(x) satisfies: A(A(x)) = 3*A(x) - 2*x - x^2 with A(0)=0.
A138739
G.f. A(x) satisfies: A(A(x)) = 3*A(x) - 2*x - x^2 with A(0)=0.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =11a(4) =88a(5) =888a(6) =10572a(7) =143214a(8) =2159154a(9) =35702442a(10) =640873656a(11) =12394383780a(12) =256762580460
External references
- oeis: A138739