G.f.: A(x) = exp( Sum_{n>=1} [ D^n x/(1-x)^2 ]^n/n ), where differential operator D = x*d/dx.
A159596
G.f.: A(x) = exp( Sum_{n>=1} [ D^n x/(1-x)^2 ]^n/n ), where differential operator D = x*d/dx.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =22a(4) =121a(5) =863a(6) =8476a(7) =118131a(8) =2361313a(9) =67467236a(10) =2731757961a(11) =156417295405
External references
- oeis: A159596