A176123 - cp's OEIS frontend

A176123 Irregular triangle, read by rows, T(n, k) = binomial(n-(k-1),k-1), 1 <= k <= floor(n/2-1).

n	a(n)
4	1
5	1
6	1
7	5
8	1
9	6
10	1
11	7
12	15
13	1
14	8
15	21
16	1
17	9
18	28
19	35
20	1
21	10
22	36
23	56
24	1
25	11
26	45
27	84
28	70
29	1
30	12
31	55
32	120
33	126
34	1
35	13
36	66
37	165
38	210
39	126
40	1
41	14
42	78
43	220
44	330
45	252
46	1
47	15
48	91
49	286
50	495
51	462
52	210
53	1
54	16
55	105
56	364
57	715
58	792
59	462
60	1
61	17
62	120
63	455
64	1001
65	1287
66	924
67	330
68	1
69	18
70	136
71	560
72	1365
73	2002
74	1716
75	792

[1, 1, 1, 5, 1, 6, 1, 7, 15, 1, 8, 21, 1, 9, 28, 35, 1, 10, 36, 56, 1, 11, 45, 84, 70, 1, 12, 55, 120, 126, 1, 13, 66, 165, 210, 126, 1, 14, 78, 220, 330, 252, 1, 15, 91, 286, 495, 462, 210, 1, 16, 105, 364, 715, 792, 462, 1, 17, 120, 455, 1001, 1287, 924, 330, 1, 18, 136, 560, 1365, 2002, 1716, 792]

cp's OEIS Frontend

A176123 Irregular triangle, read by rows, T(n, k) = binomial(n-(k-1),k-1), 1 <= k <= floor(n/2-1).

Table of values

List of values