Expansion of e.g.f. exp(x*C(x)) = exp((1-sqrt(1-4*x))/2), where C(x) is the g.f. of the Catalan numbers A000108.
A080893
Expansion of e.g.f. exp(x*C(x)) = exp((1-sqrt(1-4*x))/2), where C(x) is the g.f. of the Catalan numbers A000108.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =19a(4) =193a(5) =2721a(6) =49171a(7) =1084483a(8) =28245729a(9) =848456353a(10) =28875761731
External references
- oeis: A080893