A210661 - cp's OEIS frontend

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}.

n	a(n)
0	1
1	1
2	5
3	41
4	464
5	6679
6	116534
7	2387223
8	56126216
9	1488936405
10	43981641232
11	1431351648253
12	50877935705904
13	1960987188622955
14	81454893191133968
15	3627186997857749259
16	172364960657294194944
17	8705953783492490785801
18	465732966748611591349632
19	26305402198153236286685809
20	1564288763576093814775234304

[1, 1, 5, 41, 464, 6679, 116534, 2387223, 56126216, 1488936405, 43981641232, 1431351648253, 50877935705904, 1960987188622955, 81454893191133968, 3627186997857749259, 172364960657294194944, 8705953783492490785801, 465732966748611591349632, 26305402198153236286685809, 1564288763576093814775234304]

cp's OEIS Frontend

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}.

Table of values

List of values