A175757 - OEIS

A175757 as a simple table

n	a(n)
1	1
2	2
3	1
4	6
5	3
6	1
7	20
8	12
9	4
10	1
11	75
12	50
13	20
14	5
15	1
16	312
17	225
18	100
19	30
20	6
21	1
22	1421
23	1092
24	525
25	175
26	42
27	7
28	1
29	7016
30	5684
31	2912
32	1050
33	280
34	56
35	8
36	1
37	37260
38	31572
39	17052
40	6552
41	1890
42	420
43	72
44	9
45	1
46	211470
47	186300
48	105240
49	42630
50	13104
51	3150
52	600
53	90
54	10
55	1

[1,2,1,6,3,1,20,12,4,1,75,50,20,5,1,312,225,100, 30,6,1,1421,1092,525,175,42,7,1,7016,5684,2912, 1050,280,56,8,1,37260,31572,17052,6552,1890,420, 72,9,1,211470,186300,105240,42630,13104,3150,600, 90,10,1]