A174345 - OEIS

A174345 as a simple table

n	a(n)
1	1
2	1
3	1
4	1
5	6
6	1
7	1
8	12
9	12
10	1
11	1
12	20
13	80
14	20
15	1
16	1
17	30
18	200
19	200
20	30
21	1
22	1
23	42
24	420
25	1400
26	420
27	42
28	1
29	1
30	56
31	784
32	3920
33	3920
34	784
35	56
36	1
37	1
38	72
39	1344
40	9408
41	28224
42	9408
43	1344
44	72
45	1
46	1
47	90
48	2160
49	20160
50	84672
51	84672
52	20160
53	2160
54	90
55	1

[1,1,1,1,6,1,1,12,12,1,1,20,80,20,1,1,30,200,200, 30,1,1,42,420,1400,420,42,1,1,56,784,3920,3920, 784,56,1,1,72,1344,9408,28224,9408,1344,72,1,1,90, 2160,20160,84672,84672,20160,2160,90,1]