A362826 - cp's OEIS frontend

A362826 Array read by antidiagonals: T(n,k) is the number of k-tuples of permutations of [n] which commute, divided by n!, n >= 0, k >= 1.

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	3
14	1
15	1
16	1
17	8
18	8
19	5
20	1
21	1
22	1
23	16
24	21
25	21
26	7
27	1
28	1
29	1
30	32
31	56
32	84
33	39
34	11
35	1
36	1
37	1
38	64
39	153
40	331
41	206
42	92
43	15
44	1
45	1
46	1
47	128
48	428
49	1300
50	1087
51	717
52	170
53	22
54	1
55	1
56	1
57	256
58	1221
59	5111
60	5832
61	5512
62	1810
63	360
64	30
65	1

[1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 4, 3, 1, 1, 1, 8, 8, 5, 1, 1, 1, 16, 21, 21, 7, 1, 1, 1, 32, 56, 84, 39, 11, 1, 1, 1, 64, 153, 331, 206, 92, 15, 1, 1, 1, 128, 428, 1300, 1087, 717, 170, 22, 1, 1, 1, 256, 1221, 5111, 5832, 5512, 1810, 360, 30, 1]

cp's OEIS Frontend

A362826 Array read by antidiagonals: T(n,k) is the number of k-tuples of permutations of [n] which commute, divided by n!, n >= 0, k >= 1.

Table of values

List of values