A253666 - cp's OEIS frontend

A253666 Triangle read by rows, T(n,k) = C(n,k)*n!/(floor(n/2)!)^2, n>=0, 0<=k<=n.

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	2
6	6
7	18
8	18
9	6
10	6
11	24
12	36
13	24
14	6
15	30
16	150
17	300
18	300
19	150
20	30
21	20
22	120
23	300
24	400
25	300
26	120
27	20
28	140
29	980
30	2940
31	4900
32	4900
33	2940
34	980
35	140
36	70
37	560
38	1960
39	3920
40	4900
41	3920
42	1960
43	560
44	70
45	630
46	5670
47	22680
48	52920
49	79380
50	79380
51	52920
52	22680
53	5670
54	630

[1, 1, 1, 2, 4, 2, 6, 18, 18, 6, 6, 24, 36, 24, 6, 30, 150, 300, 300, 150, 30, 20, 120, 300, 400, 300, 120, 20, 140, 980, 2940, 4900, 4900, 2940, 980, 140, 70, 560, 1960, 3920, 4900, 3920, 1960, 560, 70, 630, 5670, 22680, 52920, 79380, 79380, 52920, 22680, 5670, 630]

cp's OEIS Frontend

A253666 Triangle read by rows, T(n,k) = C(n,k)*n!/(floor(n/2)!)^2, n>=0, 0<=k<=n.

Table of values

List of values