A365437 - OEIS

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A365437 as a simple table

n	a(n)
0	1
1	1
2	0
3	0
4	2
5	0
6	0
7	0
8	8
9	32
10	40
11	96
12	410
13	1392
14	4416
15	18752
16	71486
17	235056
18	1001972
19	4285920
20	21887710
21	94619480
22	422557444
23	2101021824
24	11943690634
25	61113195600

[1,1,0,0,2,0,0,0,8,32,40,96,410,1392,4416,18752, 71486,235056,1001972,4285920,21887710,94619480, 422557444,2101021824,11943690634,61113195600]