A136717 - cp's OEIS frontend

A136717 Triangle T(n,k), 1 <= k <= n, read by rows: T(n,k) is the number of permutations in the symmetric group S_n having k multiplicative 3-excedances. Equivalently, the number of permutations of the set {3,6,9,...,3n} 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	0
14	72
15	48
16	0
17	0
18	0
19	72
20	456
21	192
22	0
23	0
24	0
25	0
26	960
27	3120
28	960
29	0
30	0
31	0
32	0
33	0
34	10800
35	23760
36	5760
37	0
38	0
39	0
40	0
41	0
42	10800
43	133920
44	183600
45	34560
46	0
47	0
48	0
49	0
50	0
51	0
52	241920
53	1572480
54	1572480
55	241920

[1, 0, 2, 0, 2, 4, 0, 0, 12, 12, 0, 0, 0, 72, 48, 0, 0, 0, 72, 456, 192, 0, 0, 0, 0, 960, 3120, 960, 0, 0, 0, 0, 0, 10800, 23760, 5760, 0, 0, 0, 0, 0, 10800, 133920, 183600, 34560, 0, 0, 0, 0, 0, 0, 241920, 1572480, 1572480, 241920]

cp's OEIS Frontend

A136717 Triangle T(n,k), 1 <= k <= n, read by rows: T(n,k) is the number of permutations in the symmetric group S_n having k multiplicative 3-excedances. Equivalently, the number of permutations of the set {3,6,9,...,3n} with k excedances.

Table of values

List of values