A362827 - cp's OEIS frontend

A362827 Array read by antidiagonals: T(n,k) is the number of k-tuples of permutations of [n] that pairwise commute.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	2
9	1
10	1
11	1
12	4
13	6
14	1
15	1
16	1
17	8
18	18
19	24
20	1
21	1
22	1
23	16
24	48
25	120
26	120
27	1
28	1
29	1
30	32
31	126
32	504
33	840
34	720
35	1
36	1
37	1
38	64
39	336
40	2016
41	4680
42	7920
43	5040
44	1
45	1
46	1
47	128
48	918
49	7944
50	24720
51	66240
52	75600
53	40320
54	1
55	1
56	1
57	256
58	2568
59	31200
60	130440
61	516240
62	856800
63	887040
64	362880
65	1

[1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 4, 6, 1, 1, 1, 8, 18, 24, 1, 1, 1, 16, 48, 120, 120, 1, 1, 1, 32, 126, 504, 840, 720, 1, 1, 1, 64, 336, 2016, 4680, 7920, 5040, 1, 1, 1, 128, 918, 7944, 24720, 66240, 75600, 40320, 1, 1, 1, 256, 2568, 31200, 130440, 516240, 856800, 887040, 362880, 1]

cp's OEIS Frontend

A362827 Array read by antidiagonals: T(n,k) is the number of k-tuples of permutations of [n] that pairwise commute.

Table of values

List of values