A290823 - OEIS

A290823 as a simple table

n	a(n)
0	1
1	1
2	1
3	1
4	4
5	6
6	1
7	9
8	36
9	48
10	1
11	16
12	120
13	416
14	632
15	1
16	25
17	300
18	1900
19	6550
20	10930
21	400
22	1
23	36
24	630
25	6240
26	37080
27	128592
28	240192
29	39600
30	900
31	1
32	49
33	1176
34	16660
35	149695
36	858774
37	3064656
38	6354866
39	2492385
40	229320
41	1764

[1,1,1,1,4,6,1,9,36,48,1,16,120,416,632,1,25,300, 1900,6550,10930,400,1,36,630,6240,37080,128592, 240192,39600,900,1,49,1176,16660,149695,858774, 3064656,6354866,2492385,229320,1764]