A362824 - cp's OEIS frontend

A362824 Array read by antidiagonals: T(n,k) is the number of k-tuples of involutions on [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	4
14	1
15	1
16	1
17	8
18	10
19	10
20	1
21	1
22	1
23	16
24	22
25	52
26	26
27	1
28	1
29	1
30	32
31	46
32	232
33	196
34	76
35	1
36	1
37	1
38	64
39	94
40	976
41	1016
42	1216
43	232
44	1
45	1
46	1
47	128
48	190
49	4000
50	4576
51	12496
52	5944
53	764
54	1
55	1
56	1
57	256
58	382
59	16192
60	19376
61	111376
62	73648
63	42400
64	2620
65	1

[1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 4, 4, 1, 1, 1, 8, 10, 10, 1, 1, 1, 16, 22, 52, 26, 1, 1, 1, 32, 46, 232, 196, 76, 1, 1, 1, 64, 94, 976, 1016, 1216, 232, 1, 1, 1, 128, 190, 4000, 4576, 12496, 5944, 764, 1, 1, 1, 256, 382, 16192, 19376, 111376, 73648, 42400, 2620, 1]

cp's OEIS Frontend

A362824 Array read by antidiagonals: T(n,k) is the number of k-tuples of involutions on [n] that pairwise commute.

Table of values

List of values