A208240 - cp's OEIS frontend

A208240 Number of functions f:{1,2,...,n}->{1,2,...,n} with at least one cycle of length >= 3.

n	a(n)
0	0
1	0
2	0
3	2
4	38
5	674
6	12824
7	269016
8	6242116
9	159629984
10	4474156304
11	136638234842
12	4521281961800
13	161263788956178
14	6171136558989856
15	252297980348513264
16	10978226724737842928
17	506678120536777708544
18	24726830423666093964224
19	1272394054736096884141554

[0, 0, 0, 2, 38, 674, 12824, 269016, 6242116, 159629984, 4474156304, 136638234842, 4521281961800, 161263788956178, 6171136558989856, 252297980348513264, 10978226724737842928, 506678120536777708544, 24726830423666093964224, 1272394054736096884141554]

cp's OEIS Frontend

A208240 Number of functions f:{1,2,...,n}->{1,2,...,n} with at least one cycle of length >= 3.

Table of values

List of values