A180984 - OEIS

A180984 as a simple table

n	a(n)
1	2
2	1
3	1
4	0
5	3
6	0
7	0
8	3
9	3
10	0
11	0
12	1
13	15
14	1
15	0
16	0
17	0
18	31
19	31
20	0
21	0
22	0
23	0
24	34
25	234
26	34
27	0
28	0
29	0
30	0
31	21
32	925
33	925
34	21
35	0
36	0
37	0
38	0
39	7
40	2366
41	10706
42	2366
43	7
44	0
45	0
46	0
47	0
48	1
49	4305
50	77079
51	77079
52	4305
53	1
54	0
55	0
56	0
57	0
58	0
59	5845
60	400672
61	1411450
62	400672
63	5845
64	0
65	0
66	0
67	0
68	0
69	0
70	6059
71	1621242

[2,1,1,0,3,0,0,3,3,0,0,1,15,1,0,0,0,31,31,0,0,0,0, 34,234,34,0,0,0,0,21,925,925,21,0,0,0,0,7,2366, 10706,2366,7,0,0,0,0,1,4305,77079,77079,4305,1,0, 0,0,0,0,5845,400672,1411450,400672,5845,0,0,0,0,0, 0,6059,1621242]