G.f. A(x) satisfies A(x) = 1/(1-x) + x^2*A(x)*A'(x).
A143917
G.f. A(x) satisfies A(x) = 1/(1-x) + x^2*A(x)*A'(x).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =25a(5) =133a(6) =851a(7) =6313a(8) =53061a(9) =497493a(10) =5144500a(11) =58161126a(12) =713789847a(13) =9453038227a(14) =134405493652
External references
- oeis: A143917