A145880 - cp's OEIS frontend

A145880 Triangle read by rows: T(n,k) is the number of odd permutations of {1,2,...,n} with no fixed points and having k excedances (n>=1; k>=1).

n	a(n)
1	0
2	1
3	0
4	0
5	1
6	4
7	1
8	0
9	10
10	10
11	0
12	1
13	26
14	81
15	26
16	1
17	0
18	56
19	406
20	406
21	56
22	0
23	1
24	120
25	1681
26	3816
27	1681
28	120
29	1
30	0
31	246
32	6210
33	26916
34	26916
35	6210
36	246
37	0
38	1
39	502
40	21433
41	160054
42	303505
43	160054
44	21433
45	502
46	1
47	0
48	1012
49	70774
50	852346
51	2747008
52	2747008
53	852346
54	70774

[0, 1, 0, 0, 1, 4, 1, 0, 10, 10, 0, 1, 26, 81, 26, 1, 0, 56, 406, 406, 56, 0, 1, 120, 1681, 3816, 1681, 120, 1, 0, 246, 6210, 26916, 26916, 6210, 246, 0, 1, 502, 21433, 160054, 303505, 160054, 21433, 502, 1, 0, 1012, 70774, 852346, 2747008, 2747008, 852346, 70774]

cp's OEIS Frontend

A145880 Triangle read by rows: T(n,k) is the number of odd permutations of {1,2,...,n} with no fixed points and having k excedances (n>=1; k>=1).

Table of values

List of values