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A204132 as a simple table

na(n)
11
2-1
32
4-4
51
68
7-20
89
9-1
1048
11-136
1280
13-16
141
15384
16-1184
17820
18-220
1925
20-1
213840
22-12608
239784
24-3160
25490
26-36
271
2846080
29-158976
30134400
31-49504
329380
33-952
3449
35-1
36645120
37-2317824
382097024
39-853440
40186704

[1,-1,2,-4,1,8,-20,9,-1,48,-136,80,-16,1,384,
 -1184,820,-220,25,-1,3840,-12608,9784,-3160,490,
 -36,1,46080,-158976,134400,-49504,9380,-952,49,-1,
 645120,-2317824,2097024,-853440,186704]