A350015 - cp's OEIS frontend

A350015 Irregular triangle read by rows: T(n,k) is the number of n-permutations whose third-longest cycle has length exactly k; n >= 0, 0 <= k <= floor(n/3).

n	a(n)
0	1
1	1
2	2
3	5
4	1
5	17
6	7
7	74
8	46
9	394
10	311
11	15
12	2484
13	2241
14	315
15	18108
16	17627
17	4585
18	149904
19	152839
20	57897
21	2240
22	1389456
23	1460944
24	705600
25	72800
26	14257440
27	15326180
28	8673060
29	1660120
30	160460640
31	175421214
32	110271546
33	31600800
34	1247400
35	1965444480
36	2177730270
37	1469308698
38	559402272
39	55135080

[1, 1, 2, 5, 1, 17, 7, 74, 46, 394, 311, 15, 2484, 2241, 315, 18108, 17627, 4585, 149904, 152839, 57897, 2240, 1389456, 1460944, 705600, 72800, 14257440, 15326180, 8673060, 1660120, 160460640, 175421214, 110271546, 31600800, 1247400, 1965444480, 2177730270, 1469308698, 559402272, 55135080]

cp's OEIS Frontend

A350015 Irregular triangle read by rows: T(n,k) is the number of n-permutations whose third-longest cycle has length exactly k; n >= 0, 0 <= k <= floor(n/3).

Table of values

List of values