A171999 - cp's OEIS frontend

A171999 Triangle of trinomial coefficients.

n	a(n)
1	1
2	1
3	2
4	1
5	3
6	6
7	1
8	4
9	6
10	12
11	1
12	5
13	10
14	20
15	30
16	1
17	6
18	15
19	20
20	30
21	60
22	90
23	1
24	7
25	21
26	35
27	42
28	105
29	140
30	210
31	1
32	8
33	28
34	56
35	70
36	168
37	280
38	420
39	560
40	1
41	9
42	36
43	72
44	84
45	126
46	252
47	504
48	630
49	756
50	1260
51	1680
52	1
53	10
54	45
55	90
56	120
57	210
58	252
59	360
60	840
61	1260
62	2520
63	3150
64	4200
65	1
66	11
67	55

[1, 1, 2, 1, 3, 6, 1, 4, 6, 12, 1, 5, 10, 20, 30, 1, 6, 15, 20, 30, 60, 90, 1, 7, 21, 35, 42, 105, 140, 210, 1, 8, 28, 56, 70, 168, 280, 420, 560, 1, 9, 36, 72, 84, 126, 252, 504, 630, 756, 1260, 1680, 1, 10, 45, 90, 120, 210, 252, 360, 840, 1260, 2520, 3150, 4200, 1, 11, 55]

cp's OEIS Frontend

A171999 Triangle of trinomial coefficients.

Table of values

List of values