A117207 - cp's OEIS frontend

A117207 Number triangle read by rows: T(n,k) = Sum_{j=0..n-k} C(n+j,j+k)*C(n-j,k).

n	a(n)
0	1
1	3
2	1
3	10
4	7
5	1
6	35
7	31
8	13
9	1
10	126
11	121
12	81
13	21
14	1
15	462
16	456
17	381
18	181
19	31
20	1
21	1716
22	1709
23	1583
24	1058
25	358
26	43
27	1
28	6435
29	6427
30	6231
31	5055
32	2605
33	645
34	57
35	1
36	24310
37	24301
38	24013
39	21661
40	14605
41	5785
42	1081
43	73
44	1
45	92378
46	92368
47	91963
48	87643
49	70003
50	38251
51	11791

[1, 3, 1, 10, 7, 1, 35, 31, 13, 1, 126, 121, 81, 21, 1, 462, 456, 381, 181, 31, 1, 1716, 1709, 1583, 1058, 358, 43, 1, 6435, 6427, 6231, 5055, 2605, 645, 57, 1, 24310, 24301, 24013, 21661, 14605, 5785, 1081, 73, 1, 92378, 92368, 91963, 87643, 70003, 38251, 11791]

cp's OEIS Frontend

A117207 Number triangle read by rows: T(n,k) = Sum_{j=0..n-k} C(n+j,j+k)*C(n-j,k).

Table of values

List of values