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A161628 as a simple table

na(n)
01
10
2-1
30
4-2
53
60
7-3
818
9-16
100
11-4
1272
13-192
14125
150
16-5
17240
18-1440
192500
20-1296
210
22-6
23720
24-8640
2530000
26-38880
2716807
280
29-7
302016
31-45360
32280000
33-680400
34705894
35-262144
360
37-8
385376
39-217728
402240000
41-9072000
4216941456
43-14680064
444782969

[1,0,-1,0,-2,3,0,-3,18,-16,0,-4,72,-192,125,0,-5,
 240,-1440,2500,-1296,0,-6,720,-8640,30000,-38880,
 16807,0,-7,2016,-45360,280000,-680400,705894,
 -262144,0,-8,5376,-217728,2240000,-9072000,
 16941456,-14680064,4782969]