A147987 - OEIS

A147987 as a simple table

n	a(n)
1	1
2	0
3	1
4	0
5	1
6	1
7	0
8	3
9	0
10	1
11	1
12	0
13	7
14	0
15	13
16	0
17	7
18	0
19	1
20	1
21	0
22	15
23	0
24	83
25	0
26	220
27	0
28	303
29	0
30	220
31	0
32	83
33	0
34	15
35	0
36	1
37	1
38	0
39	31
40	0
41	413
42	0
43	3141
44	0
45	15261
46	0
47	50187
48	0
49	115410
50	0
51	189036
52	0
53	222621
54	0
55	189036
56	0
57	115410
58	0
59	50187
60	0
61	15261
62	0
63	3141
64	0
65	413
66	0
67	31
68	0
69	1
70	1
71	0
72	63

[1,0,1,0,1,1,0,3,0,1,1,0,7,0,13,0,7,0,1,1,0,15,0, 83,0,220,0,303,0,220,0,83,0,15,0,1,1,0,31,0,413,0, 3141,0,15261,0,50187,0,115410,0,189036,0,222621,0, 189036,0,115410,0,50187,0,15261,0,3141,0,413,0,31, 0,1,1,0,63]