A338397 - cp's OEIS frontend

A338397 Triangle read by rows: T(n,m)= Sum_{k=0..m/2} C(n-k,m-2k)C(n-k,m-k)C(n,k)/C(2k,k).

n	a(n)
0	1
1	1
2	1
3	1
4	4
5	2
6	1
7	9
8	12
9	4
10	1
11	16
12	42
13	34
14	8
15	1
16	25
17	110
18	160
19	90
20	16
21	1
22	36
23	240
24	550
25	540
26	226
27	32
28	1
29	49
30	462
31	1540
32	2310
33	1666
34	546
35	64
36	1
37	64
38	812
39	3724
40	7910
41	8596
42	4802
43	1282
44	128
45	1
46	81
47	1332
48	8064
49	23058
50	34986
51	29190
52	13140
53	2946
54	256

[1, 1, 1, 1, 4, 2, 1, 9, 12, 4, 1, 16, 42, 34, 8, 1, 25, 110, 160, 90, 16, 1, 36, 240, 550, 540, 226, 32, 1, 49, 462, 1540, 2310, 1666, 546, 64, 1, 64, 812, 3724, 7910, 8596, 4802, 1282, 128, 1, 81, 1332, 8064, 23058, 34986, 29190, 13140, 2946, 256]

cp's OEIS Frontend

A338397 Triangle read by rows: T(n,m)= Sum_{k=0..m/2} C(n-k,m-2k)C(n-k,m-k)C(n,k)/C(2k,k).

Table of values

List of values

cp's OEIS Frontend

A338397 Triangle read by rows: T(n,m)= Sum_{k=0..m/2} C(n-k,m-2*k)*C(n-k,m-k)*C(n,k)/C(2*k,k).

Table of values

List of values

A338397 Triangle read by rows: T(n,m)= Sum_{k=0..m/2} C(n-k,m-2k)C(n-k,m-k)C(n,k)/C(2k,k).