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A142156 as a simple table

na(n)
01
11
2-1
32
4-1
5-1
66
7-2
8-1
9-3
1024
11-6
12-2
13-3
14-13
15120
16-24
17-6
18-6
19-13
20-71
21720
22-120
23-24
24-18
25-26
26-71
27-461
285040
29-720
30-120
31-72
32-78
33-142
34-461
35-3447
3640320
37-5040
38-720
39-360
40-312
41-426
42-922
43-3447
44-29093
45362880
46-40320
47-5040
48-2160
49-1560

[1,1,-1,2,-1,-1,6,-2,-1,-3,24,-6,-2,-3,-13,120,
 -24,-6,-6,-13,-71,720,-120,-24,-18,-26,-71,-461,
 5040,-720,-120,-72,-78,-142,-461,-3447,40320,
 -5040,-720,-360,-312,-426,-922,-3447,-29093,
 362880,-40320,-5040,-2160,-1560]