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A053495 as a simple table

na(n)
01
11
2-1
3-1
42
5-2
61
7-4
86
9-6
10-1
116
12-18
1324
14-24
151
16-9
1736
18-96
19120
20-120
21-1
2212
23-72
24240
25-600
26720
27-720
281
29-16
30120
31-600
321800
33-4320
345040
35-5040
36-1
3720
38-200
391200
40-5400
4115120
42-35280
4340320
44-40320
451
46-25
47300
48-2400
4912600

[1,1,-1,-1,2,-2,1,-4,6,-6,-1,6,-18,24,-24,1,-9,36,
 -96,120,-120,-1,12,-72,240,-600,720,-720,1,-16,
 120,-600,1800,-4320,5040,-5040,-1,20,-200,1200,
 -5400,15120,-35280,40320,-40320,1,-25,300,-2400,
 12600]