A181886 - OEIS

A181886 as a simple table

n	a(n)
1	0
2	1
3	0
4	5
5	3
6	0
7	22
8	15
9	4
10	0
11	94
12	66
13	21
14	6
15	0
16	399
17	282
18	92
19	31
20	8
21	0
22	1691
23	1197
24	393
25	137
26	41
27	9
28	0
29	7164
30	5073
31	1668
32	586
33	181
34	47
35	11
36	0
37	30348
38	21492
39	7069
40	2488
41	773
42	208
43	57
44	12
45	0
46	128557
47	91044

[0,1,0,5,3,0,22,15,4,0,94,66,21,6,0,399,282,92,31, 8,0,1691,1197,393,137,41,9,0,7164,5073,1668,586, 181,47,11,0,30348,21492,7069,2488,773,208,57,12,0, 128557,91044]