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A163626 as a simple table

na(n)
01
11
2-1
31
4-3
52
61
7-7
812
9-6
101
11-15
1250
13-60
1424
151
16-31
17180
18-390
19360
20-120
211
22-63
23602
24-2100
253360
26-2520
27720
281
29-127
301932
31-10206
3225200
33-31920
3420160
35-5040
361
37-255
386050
39-46620
40166824
41-317520
42332640
43-181440
4440320
451
46-511
4718660

[1,1,-1,1,-3,2,1,-7,12,-6,1,-15,50,-60,24,1,-31,
 180,-390,360,-120,1,-63,602,-2100,3360,-2520,720,
 1,-127,1932,-10206,25200,-31920,20160,-5040,1,
 -255,6050,-46620,166824,-317520,332640,-181440,
 40320,1,-511,18660]