A199523 - OEIS

A199523 as a simple table

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	45
9	45
10	1
11	10
12	105
13	1260
14	105
15	10
16	45
17	6300
18	15400
19	15400
20	6300
21	45
22	105
23	15400
24	2513869
25	2491383
26	2513869
27	15400
28	105
29	105
30	1030230
31	174524175
32	425836476
33	425836476
34	174524175
35	1030230
36	105
37	1260
38	2559433
39	5866391058

[1,1,1,1,1,1,1,45,45,1,10,105,1260,105,10,45,6300, 15400,15400,6300,45,105,15400,2513869,2491383, 2513869,15400,105,105,1030230,174524175,425836476, 425836476,174524175,1030230,105,1260,2559433, 5866391058]