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A128207 as a simple table

na(n)
01
1-1
21
31
4-1
51
6-2
72
8-2
91
106
11-6
126
13-3
141
15-30
1630
17-30
1815
19-5
201
21240
22-240
23240
24-120
2540
26-8
271
28-3120
293120
30-3120
311560
32-520
33104
34-13
351
3665520
37-65520
3865520
39-32760
4010920

[1,-1,1,1,-1,1,-2,2,-2,1,6,-6,6,-3,1,-30,30,-30,
 15,-5,1,240,-240,240,-120,40,-8,1,-3120,3120,
 -3120,1560,-520,104,-13,1,65520,-65520,65520,
 -32760,10920]