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A204024 as a simple table

na(n)
11
2-1
32
4-4
51
66
7-16
810
9-1
1024
11-76
1270
13-20
141
15120
16-428
17496
18-224
1935
20-1
21720
22-2808
233808
24-2260
25588
26-56
271
285040
29-21096
3032152
31-23008
328140
33-1344
3484
35-1
3640320
37-178848
38298688
39-245560
40107328
41-24772
422772

[1,-1,2,-4,1,6,-16,10,-1,24,-76,70,-20,1,120,-428,
 496,-224,35,-1,720,-2808,3808,-2260,588,-56,1,
 5040,-21096,32152,-23008,8140,-1344,84,-1,40320,
 -178848,298688,-245560,107328,-24772,2772]