a(n) = n-fold Dumont operator of x evaluated at x=1, y=1, z=2.
A143522
a(n) = n-fold Dumont operator of x evaluated at x=1, y=1, z=2.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =18a(4) =93a(5) =618a(6) =4905a(7) =45162a(8) =474777a(9) =5618322a(10) =73895085a(11) =1069104258a(12) =16873062453a(13) =288485314938
External references
- oeis: A143522