A090181 - OEIS

A090181 as a simple table

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	1
6	0
7	1
8	3
9	1
10	0
11	1
12	6
13	6
14	1
15	0
16	1
17	10
18	20
19	10
20	1
21	0
22	1
23	15
24	50
25	50
26	15
27	1
28	0
29	1
30	21
31	105
32	175
33	105
34	21
35	1
36	0
37	1
38	28
39	196
40	490
41	490
42	196
43	28
44	1
45	0
46	1
47	36
48	336
49	1176
50	1764
51	1176
52	336
53	36
54	1
55	0
56	1
57	45
58	540
59	2520
60	5292
61	5292
62	2520
63	540
64	45
65	1
66	0
67	1
68	55
69	825
70	4950
71	13860

[1,0,1,0,1,1,0,1,3,1,0,1,6,6,1,0,1,10,20,10,1,0,1, 15,50,50,15,1,0,1,21,105,175,105,21,1,0,1,28,196, 490,490,196,28,1,0,1,36,336,1176,1764,1176,336,36, 1,0,1,45,540,2520,5292,5292,2520,540,45,1,0,1,55, 825,4950,13860]