A375837 - cp's OEIS frontend

A375837 Triangle read by rows: T(n,k) is the number of rooted chains starting with the cycle (1)(2)(3)...(n) of length k of permutation poset of n letters.

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	1
6	0
7	1
8	5
9	3
10	0
11	1
12	23
13	41
14	18
15	0
16	1
17	119
18	455
19	515
20	180
21	0
22	1
23	719
24	5139
25	10985
26	9255
27	2700
28	0
29	1
30	5039
31	62713
32	222551
33	334040
34	225855
35	56700
36	0
37	1
38	40319
39	840265
40	4619447
41	10899840
42	12686030
43	7193340
44	1587600
45	0
46	1
47	362879
48	12383329
49	101128653
50	350413245
51	620801580
52	592261110
53	289918440
54	57153600

[1, 0, 1, 0, 1, 1, 0, 1, 5, 3, 0, 1, 23, 41, 18, 0, 1, 119, 455, 515, 180, 0, 1, 719, 5139, 10985, 9255, 2700, 0, 1, 5039, 62713, 222551, 334040, 225855, 56700, 0, 1, 40319, 840265, 4619447, 10899840, 12686030, 7193340, 1587600, 0, 1, 362879, 12383329, 101128653, 350413245, 620801580, 592261110, 289918440, 57153600]

cp's OEIS Frontend

A375837 Triangle read by rows: T(n,k) is the number of rooted chains starting with the cycle (1)(2)(3)...(n) of length k of permutation poset of n letters.

Table of values

List of values