A217563 - OEIS

A217563 as a simple table

n	a(n)
0	1
1	1
2	1
3	0
4	2
5	5
6	4
7	1
8	0
9	0
10	12
11	56
12	111
13	123
14	84
15	36
16	9
17	1
18	0
19	0
20	0
21	128
22	944
23	3264
24	7096
25	10936
26	12687
27	11400
28	8004
29	4368
30	1820
31	560
32	120
33	16
34	1
35	0
36	0
37	0
38	0
39	2000
40	21104
41	109400
42	373920
43	950725
44	1915405
45	3168880
46	4394760
47	5169230
48	5188390
49	4454000

[1,1,1,0,2,5,4,1,0,0,12,56,111,123,84,36,9,1,0,0, 0,128,944,3264,7096,10936,12687,11400,8004,4368, 1820,560,120,16,1,0,0,0,0,2000,21104,109400, 373920,950725,1915405,3168880,4394760,5169230, 5188390,4454000]