A330778 - OEIS

A330778 as a simple table

n	a(n)
1	1
2	1
3	1
4	1
5	4
6	3
7	2
8	17
9	33
10	18
11	5
12	86
13	321
14	420
15	180
16	16
17	520
18	3306
19	7752
20	7650
21	2700
22	61
23	3682
24	37533
25	140172
26	238560
27	189000
28	56700
29	272
30	30050
31	473604
32	2644356
33	6899070
34	9196740
35	6085800
36	1587600
37	1385
38	278414
39	6630909
40	53244180
41	199775820
42	398328480
43	435954960
44	247665600
45	57153600

[1,1,1,1,4,3,2,17,33,18,5,86,321,420,180,16,520, 3306,7752,7650,2700,61,3682,37533,140172,238560, 189000,56700,272,30050,473604,2644356,6899070, 9196740,6085800,1587600,1385,278414,6630909, 53244180,199775820,398328480,435954960,247665600, 57153600]