A180988 - OEIS

A180988 as a simple table

n	a(n)
1	2
2	1
3	3
4	0
5	4
6	4
7	0
8	3
9	10
10	5
11	0
12	1
13	21
14	20
15	6
16	0
17	0
18	33
19	85
20	35
21	7
22	0
23	0
24	34
25	330
26	260
27	56
28	8
29	0
30	0
31	21
32	1027
33	2051
34	666
35	84
36	9
37	0
38	0
39	7
40	2429
41	14610
42	9646
43	1506
44	120
45	10
46	0
47	0
48	1
49	4326
50	86669
51	140199
52	37527
53	3102
54	165
55	11
56	0
57	0
58	0
59	5848
60	417934
61	1820715
62	1042746
63	126889

[2,1,3,0,4,4,0,3,10,5,0,1,21,20,6,0,0,33,85,35,7, 0,0,34,330,260,56,8,0,0,21,1027,2051,666,84,9,0,0, 7,2429,14610,9646,1506,120,10,0,0,1,4326,86669, 140199,37527,3102,165,11,0,0,0,5848,417934, 1820715,1042746,126889]