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A353915 as a simple table

na(n)
11
2-2
3-2
4-16
5-16
616
7-832
8-22016
9-27648
10173568
11-4228608
12-57965568
13-398991360
142554896384
15-98606039040
16-7568860053504
17-17762113880064
18200091412463616
19-7331825098948608
20-258326401420099584
21-2009778629489197056
2225949098553870647296
23-1278044473427380666368

[1,-2,-2,-16,-16,16,-832,-22016,-27648,173568,
 -4228608,-57965568,-398991360,2554896384,
 -98606039040,-7568860053504,-17762113880064,
 200091412463616,-7331825098948608,
 -258326401420099584,-2009778629489197056,
 25949098553870647296,-1278044473427380666368]