A218868 - cp's OEIS frontend

A218868 Triangular array read by rows: T(n,k) is the number of n-permutations that have exactly k distinct cycle lengths.

n	a(n)
1	1
2	2
3	3
4	3
5	10
6	14
7	25
8	95
9	176
10	424
11	120
12	721
13	3269
14	1050
15	6406
16	21202
17	12712
18	42561
19	178443
20	141876
21	436402
22	1622798
23	1418400
24	151200
25	3628801
26	17064179
27	17061660
28	2162160
29	48073796
30	177093256
31	212254548
32	41580000
33	479001601
34	2293658861
35	2735287698
36	719072640

[1, 2, 3, 3, 10, 14, 25, 95, 176, 424, 120, 721, 3269, 1050, 6406, 21202, 12712, 42561, 178443, 141876, 436402, 1622798, 1418400, 151200, 3628801, 17064179, 17061660, 2162160, 48073796, 177093256, 212254548, 41580000, 479001601, 2293658861, 2735287698, 719072640]

cp's OEIS Frontend

A218868 Triangular array read by rows: T(n,k) is the number of n-permutations that have exactly k distinct cycle lengths.

Table of values

List of values