A386789 - cp's OEIS frontend

A386789 Triangle read by rows: T(n, k) = binomial(n - 1, k - 1)*binomial(n + k, k).

n	a(n)
0	1
1	0
2	2
3	0
4	3
5	6
6	0
7	4
8	20
9	20
10	0
11	5
12	45
13	105
14	70
15	0
16	6
17	84
18	336
19	504
20	252
21	0
22	7
23	140
24	840
25	2100
26	2310
27	924
28	0
29	8
30	216
31	1800
32	6600
33	11880
34	10296
35	3432
36	0
37	9
38	315
39	3465
40	17325
41	45045
42	63063
43	45045
44	12870
45	0
46	10
47	440
48	6160
49	40040
50	140140
51	280280
52	320320
53	194480
54	48620

[1, 0, 2, 0, 3, 6, 0, 4, 20, 20, 0, 5, 45, 105, 70, 0, 6, 84, 336, 504, 252, 0, 7, 140, 840, 2100, 2310, 924, 0, 8, 216, 1800, 6600, 11880, 10296, 3432, 0, 9, 315, 3465, 17325, 45045, 63063, 45045, 12870, 0, 10, 440, 6160, 40040, 140140, 280280, 320320, 194480, 48620]

cp's OEIS Frontend

A386789 Triangle read by rows: T(n, k) = binomial(n - 1, k - 1)*binomial(n + k, k).

Table of values

List of values