E.g.f. A(x) satisfies A(A(x)) = x * exp(2*x).
A199852
E.g.f. A(x) satisfies A(A(x)) = x * exp(2*x).
Terms
- a(0) =1a(1) =2a(2) =0a(3) =4a(4) =-20a(5) =36a(6) =2296a(7) =-71280a(8) =1347984a(9) =-9104480a(10) =-566853584a(11) =26068456800a(12) =-109901066912
External references
- oeis: A199852