A143087 - OEIS

A143087 as a simple table

n	a(n)
1	1
2	1
3	1
4	1
5	6
6	1
7	1
8	9
9	9
10	1
11	1
12	12
13	42
14	12
15	1
16	1
17	15
18	70
19	70
20	15
21	1
22	1
23	18
24	105
25	300
26	105
27	18
28	1
29	1
30	21
31	147
32	525
33	525
34	147
35	21
36	1
37	1
38	24
39	196
40	840
41	2170
42	840
43	196
44	24
45	1
46	1
47	27
48	252
49	1260
50	3906
51	3906
52	1260
53	252
54	27
55	1
56	1
57	30
58	315
59	1800
60	6510
61	15876
62	6510
63	1800
64	315
65	30
66	1

[1,1,1,1,6,1,1,9,9,1,1,12,42,12,1,1,15,70,70,15,1, 1,18,105,300,105,18,1,1,21,147,525,525,147,21,1,1, 24,196,840,2170,840,196,24,1,1,27,252,1260,3906, 3906,1260,252,27,1,1,30,315,1800,6510,15876,6510, 1800,315,30,1]