A155865 - cp's OEIS frontend

A155865 Triangle T(n,k) = (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	1
5	1
6	1
7	2
8	2
9	1
10	1
11	3
12	6
13	3
14	1
15	1
16	4
17	12
18	12
19	4
20	1
21	1
22	5
23	20
24	30
25	20
26	5
27	1
28	1
29	6
30	30
31	60
32	60
33	30
34	6
35	1
36	1
37	7
38	42
39	105
40	140
41	105
42	42
43	7
44	1
45	1
46	8
47	56
48	168
49	280
50	280
51	168
52	56
53	8
54	1
55	1
56	9
57	72
58	252
59	504
60	630
61	504
62	252
63	72
64	9
65	1
66	1
67	10
68	90
69	360
70	840
71	1260
72	1260
73	840
74	360
75	90
76	10
77	1

[1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 3, 6, 3, 1, 1, 4, 12, 12, 4, 1, 1, 5, 20, 30, 20, 5, 1, 1, 6, 30, 60, 60, 30, 6, 1, 1, 7, 42, 105, 140, 105, 42, 7, 1, 1, 8, 56, 168, 280, 280, 168, 56, 8, 1, 1, 9, 72, 252, 504, 630, 504, 252, 72, 9, 1, 1, 10, 90, 360, 840, 1260, 1260, 840, 360, 90, 10, 1]

cp's OEIS Frontend

A155865 Triangle T(n,k) = (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