A172021 - OEIS

A172021 as a simple table

n	a(n)
1	1
2	1
3	2
4	2
5	1
6	2
7	4
8	6
9	6
10	1
11	2
12	4
13	8
14	14
15	20
16	20
17	1
18	2
19	4
20	8
21	16
22	30
23	50
24	70
25	70
26	1
27	2
28	4
29	8
30	16
31	32
32	62
33	112
34	182
35	252
36	252
37	1
38	2
39	4
40	8
41	16
42	32
43	64
44	126
45	238
46	420
47	672
48	924
49	924
50	1
51	2
52	4
53	8
54	16
55	32
56	64
57	128
58	254
59	492
60	912
61	1584
62	2508
63	3432
64	3432

[1,1,2,2,1,2,4,6,6,1,2,4,8,14,20,20,1,2,4,8,16,30, 50,70,70,1,2,4,8,16,32,62,112,182,252,252,1,2,4,8, 16,32,64,126,238,420,672,924,924,1,2,4,8,16,32,64, 128,254,492,912,1584,2508,3432,3432]