a(n) is the coefficient of x^n in the (n+1)-th self-composition of g.f. A(x) for n>=1, with a(1)=1.
A153389
a(n) is the coefficient of x^n in the (n+1)-th self-composition of g.f. A(x) for n>=1, with a(1)=1.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =24a(4) =340a(5) =6950a(6) =185332a(7) =6102096a(8) =240066324a(9) =11049803253a(10) =586427736400
External references
- oeis: A153389