The total number of ways to linearly order the connected components of each functional digraph over all functions f:{1,2,...,n}->{1,2,...,n}.
A210661
The total number of ways to linearly order the connected components of each functional digraph over all functions f:{1,2,...,n}->{1,2,...,n}.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =41a(4) =464a(5) =6679a(6) =116534a(7) =2387223a(8) =56126216a(9) =1488936405a(10) =43981641232
External references
- oeis: A210661