A186686 - OEIS

A186686 as a simple table

n	a(n)
1	1
2	2
3	1
4	3
5	4
6	1
7	4
8	10
9	6
10	1
11	3
12	20
13	21
14	8
15	1
16	1
17	31
18	56
19	36
20	10
21	1
22	0
23	38
24	120
25	120
26	55
27	12
28	1
29	0
30	38
31	213
32	322
33	220
34	78
35	14
36	1
37	0
38	30
39	321
40	724
41	705
42	364
43	105
44	16
45	1
46	0
47	17
48	414
49	1400
50	1897
51	1353
52	560
53	136
54	18
55	1
56	0
57	6
58	456
59	2364
60	4410
61	4218
62	2366
63	816
64	171
65	20
66	1
67	0
68	1
69	427
70	3515
71	9020
72	11374
73	8365
74	3860
75	1140
76	210
77	22
78	1

[1,2,1,3,4,1,4,10,6,1,3,20,21,8,1,1,31,56,36,10,1, 0,38,120,120,55,12,1,0,38,213,322,220,78,14,1,0, 30,321,724,705,364,105,16,1,0,17,414,1400,1897, 1353,560,136,18,1,0,6,456,2364,4410,4218,2366,816, 171,20,1,0,1,427,3515,9020,11374,8365,3860,1140, 210,22,1]