A225213 - cp's OEIS frontend

A225213 Triangular array read by rows. T(n,k) is the number of cycles in the digraph representation of all functions f:{1,2,...,n}->{1,2,...,n} that have length k; 1<=k<=n.

n	a(n)
1	1
2	4
3	1
4	27
5	9
6	2
7	256
8	96
9	32
10	6
11	3125
12	1250
13	500
14	150
15	24
16	46656
17	19440
18	8640
19	3240
20	864
21	120
22	823543
23	352947
24	168070
25	72030
26	24696
27	5880
28	720
29	16777216
30	7340032
31	3670016
32	1720320
33	688128
34	215040
35	46080
36	5040

[1, 4, 1, 27, 9, 2, 256, 96, 32, 6, 3125, 1250, 500, 150, 24, 46656, 19440, 8640, 3240, 864, 120, 823543, 352947, 168070, 72030, 24696, 5880, 720, 16777216, 7340032, 3670016, 1720320, 688128, 215040, 46080, 5040]

cp's OEIS Frontend

A225213 Triangular array read by rows. T(n,k) is the number of cycles in the digraph representation of all functions f:{1,2,...,n}->{1,2,...,n} that have length k; 1<=k<=n.

Table of values

List of values