A161381 - cp's OEIS frontend

A161381 Triangle read by rows: T(n,k) = n!*2^k/(n-k)! (n >= 0, 0 <= k <= n).

n	a(n)
0	1
1	1
2	2
3	1
4	4
5	8
6	1
7	6
8	24
9	48
10	1
11	8
12	48
13	192
14	384
15	1
16	10
17	80
18	480
19	1920
20	3840
21	1
22	12
23	120
24	960
25	5760
26	23040
27	46080
28	1
29	14
30	168
31	1680
32	13440
33	80640
34	322560
35	645120
36	1
37	16
38	224
39	2688
40	26880
41	215040
42	1290240
43	5160960
44	10321920
45	1
46	18
47	288
48	4032
49	48384
50	483840
51	3870720
52	23224320
53	92897280
54	185794560

[1, 1, 2, 1, 4, 8, 1, 6, 24, 48, 1, 8, 48, 192, 384, 1, 10, 80, 480, 1920, 3840, 1, 12, 120, 960, 5760, 23040, 46080, 1, 14, 168, 1680, 13440, 80640, 322560, 645120, 1, 16, 224, 2688, 26880, 215040, 1290240, 5160960, 10321920, 1, 18, 288, 4032, 48384, 483840, 3870720, 23224320, 92897280, 185794560]

cp's OEIS Frontend

A161381 Triangle read by rows: T(n,k) = n!*2^k/(n-k)! (n >= 0, 0 <= k <= n).

Table of values

List of values