A246117 - cp's OEIS frontend

A246117 Number of parity preserving permutations of the set {1,2,...,n} with exactly k cycles.

n	a(n)
1	1
2	0
3	1
4	0
5	1
6	1
7	0
8	1
9	2
10	1
11	0
12	2
13	5
14	4
15	1
16	0
17	4
18	12
19	13
20	6
21	1
22	0
23	12
24	40
25	51
26	31
27	9
28	1
29	0
30	36
31	132
32	193
33	144
34	58
35	12
36	1
37	0
38	144
39	564
40	904
41	769
42	376
43	106
44	16
45	1
46	0
47	576
48	2400
49	4180
50	3980
51	2273
52	800
53	170
54	20
55	1
56	0
57	2880
58	12576
59	23300
60	24080
61	15345
62	6273
63	1650
64	270
65	25
66	1

[1, 0, 1, 0, 1, 1, 0, 1, 2, 1, 0, 2, 5, 4, 1, 0, 4, 12, 13, 6, 1, 0, 12, 40, 51, 31, 9, 1, 0, 36, 132, 193, 144, 58, 12, 1, 0, 144, 564, 904, 769, 376, 106, 16, 1, 0, 576, 2400, 4180, 3980, 2273, 800, 170, 20, 1, 0, 2880, 12576, 23300, 24080, 15345, 6273, 1650, 270, 25, 1]

cp's OEIS Frontend

A246117 Number of parity preserving permutations of the set {1,2,...,n} with exactly k cycles.

Table of values

List of values