A237996 - cp's OEIS frontend

A237996 Triangular array read by rows. T(n,k) is the number of even permutations of {1,2,...,n} that have exactly k cycles, n >= 0, 0 <= k <= n.

n	a(n)
0	1
1	0
2	1
3	0
4	0
5	1
6	0
7	2
8	0
9	1
10	0
11	0
12	11
13	0
14	1
15	0
16	24
17	0
18	35
19	0
20	1
21	0
22	0
23	274
24	0
25	85
26	0
27	1
28	0
29	720
30	0
31	1624
32	0
33	175
34	0
35	1
36	0
37	0
38	13068
39	0
40	6769
41	0
42	322
43	0
44	1
45	0
46	40320
47	0
48	118124
49	0
50	22449
51	0
52	546
53	0
54	1
55	0
56	0
57	1026576
58	0
59	723680
60	0
61	63273
62	0
63	870
64	0
65	1

[1, 0, 1, 0, 0, 1, 0, 2, 0, 1, 0, 0, 11, 0, 1, 0, 24, 0, 35, 0, 1, 0, 0, 274, 0, 85, 0, 1, 0, 720, 0, 1624, 0, 175, 0, 1, 0, 0, 13068, 0, 6769, 0, 322, 0, 1, 0, 40320, 0, 118124, 0, 22449, 0, 546, 0, 1, 0, 0, 1026576, 0, 723680, 0, 63273, 0, 870, 0, 1]

cp's OEIS Frontend

A237996 Triangular array read by rows. T(n,k) is the number of even permutations of {1,2,...,n} that have exactly k cycles, n >= 0, 0 <= k <= n.

Table of values

List of values