A170872 - OEIS

A170872 as a simple table

n	a(n)
0	1
1	2
2	9
3	33
4	9
5	33
6	126
7	126
8	9
9	33
10	126
11	126
12	126
13	477
14	756
15	405
16	9
17	33
18	126
19	126
20	126
21	477
22	756
23	405
24	126
25	477
26	756
27	756
28	1809
29	3699
30	3483
31	1242
32	9
33	33
34	126
35	126
36	126
37	477
38	756
39	405
40	126
41	477
42	756
43	756
44	1809
45	3699
46	3483
47	1242
48	126
49	477
50	756
51	756
52	1809
53	3699
54	3483
55	1593

[1,2,9,33,9,33,126,126,9,33,126,126,126,477,756, 405,9,33,126,126,126,477,756,405,126,477,756,756, 1809,3699,3483,1242,9,33,126,126,126,477,756,405, 126,477,756,756,1809,3699,3483,1242,126,477,756, 756,1809,3699,3483,1593]