G.f. A(x) satisfies: A(x) = Sum_{n>=0} x^n * (2 + x*A(x)^n)^n.
A322725
G.f. A(x) satisfies: A(x) = Sum_{n>=0} x^n * (2 + x*A(x)^n)^n.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =14a(4) =50a(5) =220a(6) =1107a(7) =6030a(8) =34643a(9) =207704a(10) =1293190a(11) =8332942a(12) =55406884a(13) =379151494a(14) =2664359328a(15) =19193917324a(16) =141571867121
External references
- oeis: A322725