A362903 - cp's OEIS frontend

A362903 Array read by antidiagonals: T(n,k) is the number of nonisomorphic k-tuples of involutions on a (2n)-set that pairwise commute.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	4
8	3
9	1
10	1
11	8
12	11
13	4
14	1
15	1
16	16
17	43
18	24
19	5
20	1
21	1
22	32
23	171
24	176
25	46
26	6
27	1
28	1
29	64
30	683
31	1376
32	611
33	80
34	7
35	1
36	1
37	128
38	2731
39	10944
40	9281
41	1864
42	130
43	8
44	1
45	1
46	256
47	10923
48	87424
49	146445
50	54384
51	5161
52	200
53	9
54	1
55	1
56	512
57	43691
58	699136
59	2334181
60	1696352
61	285939
62	13184
63	295
64	10
65	1

[1, 1, 1, 1, 2, 1, 1, 4, 3, 1, 1, 8, 11, 4, 1, 1, 16, 43, 24, 5, 1, 1, 32, 171, 176, 46, 6, 1, 1, 64, 683, 1376, 611, 80, 7, 1, 1, 128, 2731, 10944, 9281, 1864, 130, 8, 1, 1, 256, 10923, 87424, 146445, 54384, 5161, 200, 9, 1, 1, 512, 43691, 699136, 2334181, 1696352, 285939, 13184, 295, 10, 1]

cp's OEIS Frontend

A362903 Array read by antidiagonals: T(n,k) is the number of nonisomorphic k-tuples of involutions on a (2n)-set that pairwise commute.

Table of values

List of values