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A096713 as a simple table

na(n)
01
11
2-1
31
4-3
51
63
7-6
81
915
10-10
111
12-15
1345
14-15
151
16-105
17105
18-21
191
20105
21-420
22210
23-28
241
25945
26-1260
27378
28-36
291
30-945
314725
32-3150
33630
34-45
351
36-10395
3717325
38-6930
39990
40-55
411
4210395
43-62370
4451975
45-13860
461485
47-66
481
49135135
50-270270
51135135
52-25740
532145
54-78
551

[1,1,-1,1,-3,1,3,-6,1,15,-10,1,-15,45,-15,1,-105,
 105,-21,1,105,-420,210,-28,1,945,-1260,378,-36,1,
 -945,4725,-3150,630,-45,1,-10395,17325,-6930,990,
 -55,1,10395,-62370,51975,-13860,1485,-66,1,135135,
 -270270,135135,-25740,2145,-78,1]