G.f. A(x) satisfies A(x) = 1/(1-x) + x^2 * (d/dx A(x)^2).
A386208
G.f. A(x) satisfies A(x) = 1/(1-x) + x^2 * (d/dx A(x)^2).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =15a(4) =109a(5) =1029a(6) =11831a(7) =159595a(8) =2466073a(9) =42920585a(10) =830791243a(11) =17706459431a(12) =412116616517
External references
- oeis: A386208