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A204126 as a simple table

na(n)
11
2-1
31
4-3
51
62
7-8
86
9-1
106
11-28
1229
13-10
141
1524
16-124
17155
18-75
1915
20-1
21120
22-668
23949
24-565
25160
26-21
271
28720
29-4248
306636
31-4564
321610
33-301
3428
35-1
365040
37-31176
3852464
39-40208
4016569
41-3892
42518
43-36
441
4540320
46-259488
47463956

[1,-1,1,-3,1,2,-8,6,-1,6,-28,29,-10,1,24,-124,155,
 -75,15,-1,120,-668,949,-565,160,-21,1,720,-4248,
 6636,-4564,1610,-301,28,-1,5040,-31176,52464,
 -40208,16569,-3892,518,-36,1,40320,-259488,463956]