Number of functions f:{1,2,...,n}->{1,2,...,n} with all cycles of length >= 4.
A208230
Number of functions f:{1,2,...,n}->{1,2,...,n} with all cycles of length >= 4.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =0a(4) =6a(5) =144a(6) =3000a(7) =64560a(8) =1498140a(9) =37906848a(10) =1046608416a(11) =31438821600
External references
- oeis: A208230