A173003 - OEIS

A173003 as a simple table

n	a(n)
0	0
1	0
2	1
3	0
4	1
5	2
6	0
7	1
8	4
9	7
10	0
11	1
12	6
13	25
14	30
15	0
16	1
17	8
18	55
19	204
20	157
21	0
22	1
23	10
24	97
25	666
26	2065
27	972
28	0
29	1
30	12
31	151
32	1560
33	10045
34	24984
35	6961
36	0
37	1
38	14
39	217
40	3030
41	31297
42	181476
43	351841
44	56660
45	0
46	1
47	16
48	295
49	5220
50	75901
51	752688
52	3821041
53	5654440
54	516901

[0,0,1,0,1,2,0,1,4,7,0,1,6,25,30,0,1,8,55,204,157, 0,1,10,97,666,2065,972,0,1,12,151,1560,10045, 24984,6961,0,1,14,217,3030,31297,181476,351841, 56660,0,1,16,295,5220,75901,752688,3821041, 5654440,516901]