A187115 - OEIS

A187115 as a simple table

n	a(n)
2	1
3	1
4	2
5	1
6	4
7	7
8	1
9	6
10	20
11	40
12	1
13	8
14	39
15	138
16	326
17	1
18	10
19	64
20	318
21	1258
22	3492
23	1
24	12
25	95
26	604
27	3242
28	14476
29	46558
30	1
31	14
32	132
33	1020
34	6844
35	40348
36	202655
37	744320
38	1
39	16
40	175
41	1590
42	12750
43	92140
44	598083
45	3354848
46	13889080
47	1
48	18
49	224
50	2338
51	21766
52	185240
53	1450388
54	10337402
55	64246776
56	296459376

[1,1,2,1,4,7,1,6,20,40,1,8,39,138,326,1,10,64,318, 1258,3492,1,12,95,604,3242,14476,46558,1,14,132, 1020,6844,40348,202655,744320,1,16,175,1590,12750, 92140,598083,3354848,13889080,1,18,224,2338,21766, 185240,1450388,10337402,64246776,296459376]