A239145 - cp's OEIS frontend

A239145 Number T(n,k) of self-inverse permutations p on [n] where the minimal transposition distance equals k (k=0 for the identity permutation); triangle T(n,k), n>=0, 0<=k<=n, read by rows.

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	0
6	1
7	2
8	1
9	0
10	1
11	5
12	3
13	1
14	0
15	1
16	13
17	8
18	3
19	1
20	0
21	1
22	39
23	22
24	10
25	3
26	1
27	0
28	1
29	120
30	65
31	32
32	10
33	3
34	1
35	0
36	1
37	401
38	208
39	103
40	37
41	10
42	3
43	1
44	0
45	1
46	1385
47	703
48	344
49	136
50	37
51	10
52	3
53	1
54	0
55	1
56	5069
57	2517
58	1206
59	501
60	151
61	37
62	10
63	3
64	1
65	0
66	1
67	19170
68	9390
69	4421
70	1890
71	622
72	151
73	37
74	10
75	3
76	1
77	0

[1, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 5, 3, 1, 0, 1, 13, 8, 3, 1, 0, 1, 39, 22, 10, 3, 1, 0, 1, 120, 65, 32, 10, 3, 1, 0, 1, 401, 208, 103, 37, 10, 3, 1, 0, 1, 1385, 703, 344, 136, 37, 10, 3, 1, 0, 1, 5069, 2517, 1206, 501, 151, 37, 10, 3, 1, 0, 1, 19170, 9390, 4421, 1890, 622, 151, 37, 10, 3, 1, 0]

cp's OEIS Frontend

A239145 Number T(n,k) of self-inverse permutations p on [n] where the minimal transposition distance equals k (k=0 for the identity permutation); triangle T(n,k), n>=0, 0<=k<=n, read by rows.

Table of values

List of values