A176991 - cp's OEIS frontend

A176991 Triangle t(n,m) = binomial(n+m,m) - binomial(n-m,m), 1<=m<=n, read by rows.

n	a(n)
1	2
2	2
3	6
4	2
5	10
6	20
7	2
8	14
9	35
10	70
11	2
12	18
13	56
14	126
15	252
16	2
17	22
18	83
19	210
20	462
21	924
22	2
23	26
24	116
25	330
26	792
27	1716
28	3432
29	2
30	30
31	155
32	494
33	1287
34	3003
35	6435
36	12870
37	2
38	34
39	200
40	710
41	2002
42	5005
43	11440
44	24310
45	48620
46	2
47	38
48	251
49	986
50	3002
51	8008
52	19448
53	43758
54	92378
55	184756

[2, 2, 6, 2, 10, 20, 2, 14, 35, 70, 2, 18, 56, 126, 252, 2, 22, 83, 210, 462, 924, 2, 26, 116, 330, 792, 1716, 3432, 2, 30, 155, 494, 1287, 3003, 6435, 12870, 2, 34, 200, 710, 2002, 5005, 11440, 24310, 48620, 2, 38, 251, 986, 3002, 8008, 19448, 43758, 92378, 184756]

cp's OEIS Frontend

A176991 Triangle t(n,m) = binomial(n+m,m) - binomial(n-m,m), 1<=m<=n, read by rows.

Table of values

List of values