Number of connected functions from {1,2,...,n} into a subset of {1,2,...,n} summed over all subsets.
A216858
Number of connected functions from {1,2,...,n} into a subset of {1,2,...,n} summed over all subsets.
Terms
- a(0) =0a(1) =1a(2) =5a(3) =38a(4) =422a(5) =6184a(6) =112632a(7) =2453296a(8) =62202800a(9) =1799623296a(10) =58507176320
External references
- oeis: A216858