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A353254 as a simple table

na(n)
01
10
2-2
3-2
40
50
6-12
7-88
8-608
9-4664
10-40032
11-381200
12-3993520
13-45685472
14-566975456
15-7589393568
16-109019255360
17-1673050977024
18-27321358963904
19-473094230383616
20-8659054324278528
21-167044915214322816
22-3387793305708038400
23-72061754672510128384

[1,0,-2,-2,0,0,-12,-88,-608,-4664,-40032,-381200,
 -3993520,-45685472,-566975456,-7589393568,
 -109019255360,-1673050977024,-27321358963904,
 -473094230383616,-8659054324278528,
 -167044915214322816,-3387793305708038400,
 -72061754672510128384]