A361397 - OEIS

A361397 as a simple table

n	a(n)
0	1
1	1
2	0
3	1
4	2
5	0
6	1
7	4
8	2
9	0
10	1
11	6
12	20
13	4
14	0
15	1
16	8
17	54
18	176
19	10
20	0
21	1
22	10
23	104
24	996
25	1876
26	28
27	0
28	1
29	12
30	170
31	2944
32	22734
33	22064
34	84
35	0
36	1
37	14
38	252
39	6500
40	108136
41	577692
42	275568
43	264
44	0
45	1
46	16
47	350
48	12144
49	332050
50	4525888
51	15680628
52	3584064
53	858
54	0

[1,1,0,1,2,0,1,4,2,0,1,6,20,4,0,1,8,54,176,10,0,1, 10,104,996,1876,28,0,1,12,170,2944,22734,22064,84, 0,1,14,252,6500,108136,577692,275568,264,0,1,16, 350,12144,332050,4525888,15680628,3584064,858,0]