A269949 - cp's OEIS frontend

A269949 Triangle read by rows, T(n,k) = denominator(binomial(-1/2, n-k))*binomial(n-1/2, k-1/2), for n>=0 and 0<=k<=n.

n	a(n)
0	1
1	1
2	1
3	3
4	3
5	1
6	5
7	15
8	5
9	1
10	35
11	35
12	35
13	7
14	1
15	63
16	315
17	105
18	63
19	9
20	1
21	231
22	693
23	1155
24	231
25	99
26	11
27	1
28	429
29	3003
30	3003
31	3003
32	429
33	143
34	13
35	1
36	6435
37	6435
38	15015
39	9009
40	6435
41	715
42	195
43	15
44	1
45	12155
46	109395
47	36465
48	51051
49	21879
50	12155
51	1105
52	255
53	17
54	1

[1, 1, 1, 3, 3, 1, 5, 15, 5, 1, 35, 35, 35, 7, 1, 63, 315, 105, 63, 9, 1, 231, 693, 1155, 231, 99, 11, 1, 429, 3003, 3003, 3003, 429, 143, 13, 1, 6435, 6435, 15015, 9009, 6435, 715, 195, 15, 1, 12155, 109395, 36465, 51051, 21879, 12155, 1105, 255, 17, 1]

cp's OEIS Frontend

A269949 Triangle read by rows, T(n,k) = denominator(binomial(-1/2, n-k))*binomial(n-1/2, k-1/2), for n>=0 and 0<=k<=n.

Table of values

List of values