The number of cycles in the digraph representation of all endofunctions on {1,2,...,n}.

A190314

The number of cycles in the digraph representation of all endofunctions on {1,2,...,n}.

Terms

    a(0) =0a(1) =1a(2) =5a(3) =38a(4) =390a(5) =5049a(6) =78960a(7) =1447886a(8) =30461872a(9) =723267369a(10) =19130274880a(11) =557794986814

External references