A136716 - cp's OEIS frontend

A136716 Triangle T(n,k), 0 <= k < n, read by rows: T(n,k) is the number of permutations of the set O_n = {1,3,5,...,2n-1} with k excedances.

n	a(n)
1	1
2	0
3	2
4	0
5	2
6	4
7	0
8	0
9	12
10	12
11	0
12	0
13	12
14	72
15	36
16	0
17	0
18	0
19	144
20	432
21	144
22	0
23	0
24	0
25	144
26	1728
27	2592
28	576
29	0
30	0
31	0
32	0
33	2880
34	17280
35	17280
36	2880
37	0
38	0
39	0
40	0
41	2880
42	57600
43	172800
44	115200
45	14400
46	0
47	0
48	0
49	0
50	0
51	86400
52	864000
53	1728000
54	864000
55	86400

[1, 0, 2, 0, 2, 4, 0, 0, 12, 12, 0, 0, 12, 72, 36, 0, 0, 0, 144, 432, 144, 0, 0, 0, 144, 1728, 2592, 576, 0, 0, 0, 0, 2880, 17280, 17280, 2880, 0, 0, 0, 0, 2880, 57600, 172800, 115200, 14400, 0, 0, 0, 0, 0, 86400, 864000, 1728000, 864000, 86400]

cp's OEIS Frontend

A136716 Triangle T(n,k), 0 <= k < n, read by rows: T(n,k) is the number of permutations of the set O_n = {1,3,5,...,2n-1} with k excedances.

Table of values

List of values