E.g.f. A(x) satisfies A(x) = exp(x) * C(x*A(x)), where C(x) = 1 + x*C(x)^2 is the g.f. of A000108.
A381982
E.g.f. A(x) satisfies A(x) = exp(x) * C(x*A(x)), where C(x) = 1 + x*C(x)^2 is the g.f. of A000108.
Terms
- a(0) =1a(1) =2a(2) =11a(3) =139a(4) =2829a(5) =78981a(6) =2802163a(7) =120667667a(8) =6113752025a(9) =356342305465
External references
- oeis: A381982