A190907 - cp's OEIS frontend

A190907 Triangle read by rows: T(n,k) = binomial(n+k, n-k) k! / (floor(k/2)! * floor((k+2)/2)!).

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	1
6	1
7	6
8	5
9	3
10	1
11	10
12	15
13	21
14	2
15	1
16	15
17	35
18	84
19	18
20	10
21	1
22	21
23	70
24	252
25	90
26	110
27	5
28	1
29	28
30	126
31	630
32	330
33	660
34	65
35	35
36	1
37	36
38	210
39	1386
40	990
41	2860
42	455
43	525
44	14
45	1
46	45
47	330
48	2772
49	2574
50	10010
51	2275
52	4200
53	238
54	126

[1, 1, 1, 1, 3, 1, 1, 6, 5, 3, 1, 10, 15, 21, 2, 1, 15, 35, 84, 18, 10, 1, 21, 70, 252, 90, 110, 5, 1, 28, 126, 630, 330, 660, 65, 35, 1, 36, 210, 1386, 990, 2860, 455, 525, 14, 1, 45, 330, 2772, 2574, 10010, 2275, 4200, 238, 126]

cp's OEIS Frontend

A190907 Triangle read by rows: T(n,k) = binomial(n+k, n-k) k! / (floor(k/2)! * floor((k+2)/2)!).

Table of values

List of values