A155864 - cp's OEIS frontend

A155864 Triangle T(n,k) = n(n-1)binomial(n-2, k-1) for 1 <= k <= n-1, n >= 2, and T(n,0) = T(n,n) = 1 for n >= 0, read by rows.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	6
8	6
9	1
10	1
11	12
12	24
13	12
14	1
15	1
16	20
17	60
18	60
19	20
20	1
21	1
22	30
23	120
24	180
25	120
26	30
27	1
28	1
29	42
30	210
31	420
32	420
33	210
34	42
35	1
36	1
37	56
38	336
39	840
40	1120
41	840
42	336
43	56
44	1
45	1
46	72
47	504
48	1512
49	2520
50	2520
51	1512
52	504
53	72
54	1
55	1
56	90
57	720
58	2520
59	5040
60	6300
61	5040
62	2520
63	720
64	90
65	1

[1, 1, 1, 1, 2, 1, 1, 6, 6, 1, 1, 12, 24, 12, 1, 1, 20, 60, 60, 20, 1, 1, 30, 120, 180, 120, 30, 1, 1, 42, 210, 420, 420, 210, 42, 1, 1, 56, 336, 840, 1120, 840, 336, 56, 1, 1, 72, 504, 1512, 2520, 2520, 1512, 504, 72, 1, 1, 90, 720, 2520, 5040, 6300, 5040, 2520, 720, 90, 1]

cp's OEIS Frontend

A155864 Triangle T(n,k) = n(n-1)binomial(n-2, k-1) for 1 <= k <= n-1, n >= 2, and T(n,0) = T(n,n) = 1 for n >= 0, read by rows.

Table of values

List of values

cp's OEIS Frontend

A155864 Triangle T(n,k) = n*(n-1)*binomial(n-2, k-1) for 1 <= k <= n-1, n >= 2, and T(n,0) = T(n,n) = 1 for n >= 0, read by rows.

Table of values

List of values

A155864 Triangle T(n,k) = n(n-1)binomial(n-2, k-1) for 1 <= k <= n-1, n >= 2, and T(n,0) = T(n,n) = 1 for n >= 0, read by rows.