A174158 - cp's OEIS frontend

A174158 Triangle read by rows: T(n,m) = (binomial(n - 1, m - 1)*binomial(n, m - 1)/m)^2.

n	a(n)
1	1
2	1
3	1
4	1
5	9
6	1
7	1
8	36
9	36
10	1
11	1
12	100
13	400
14	100
15	1
16	1
17	225
18	2500
19	2500
20	225
21	1
22	1
23	441
24	11025
25	30625
26	11025
27	441
28	1
29	1
30	784
31	38416
32	240100
33	240100
34	38416
35	784
36	1
37	1
38	1296
39	112896
40	1382976
41	3111696
42	1382976
43	112896
44	1296
45	1
46	1
47	2025
48	291600
49	6350400
50	28005264
51	28005264
52	6350400
53	291600
54	2025
55	1

[1, 1, 1, 1, 9, 1, 1, 36, 36, 1, 1, 100, 400, 100, 1, 1, 225, 2500, 2500, 225, 1, 1, 441, 11025, 30625, 11025, 441, 1, 1, 784, 38416, 240100, 240100, 38416, 784, 1, 1, 1296, 112896, 1382976, 3111696, 1382976, 112896, 1296, 1, 1, 2025, 291600, 6350400, 28005264, 28005264, 6350400, 291600, 2025, 1]

cp's OEIS Frontend

A174158 Triangle read by rows: T(n,m) = (binomial(n - 1, m - 1)*binomial(n, m - 1)/m)^2.

Table of values

List of values