A050155 - cp's OEIS frontend

A050155 Triangle T(n,k), k>=0 and n>=1, read by rows defined by: T(n,k) = (2k+3)*binomial(2n,n-k-1)/(n+k+2).

n	a(n)
1	1
2	3
3	1
4	9
5	5
6	1
7	28
8	20
9	7
10	1
11	90
12	75
13	35
14	9
15	1
16	297
17	275
18	154
19	54
20	11
21	1
22	1001
23	1001
24	637
25	273
26	77
27	13
28	1
29	3432
30	3640
31	2548
32	1260
33	440
34	104
35	15
36	1
37	11934
38	13260
39	9996
40	5508
41	2244
42	663
43	135
44	17
45	1
46	41990
47	48450
48	38760
49	23256
50	10659
51	3705
52	950
53	170
54	19
55	1

[1, 3, 1, 9, 5, 1, 28, 20, 7, 1, 90, 75, 35, 9, 1, 297, 275, 154, 54, 11, 1, 1001, 1001, 637, 273, 77, 13, 1, 3432, 3640, 2548, 1260, 440, 104, 15, 1, 11934, 13260, 9996, 5508, 2244, 663, 135, 17, 1, 41990, 48450, 38760, 23256, 10659, 3705, 950, 170, 19, 1]

cp's OEIS Frontend

A050155 Triangle T(n,k), k>=0 and n>=1, read by rows defined by: T(n,k) = (2k+3)*binomial(2n,n-k-1)/(n+k+2).

Table of values

List of values