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A204111 as a simple table

na(n)
12
2-1
35
4-5
51
610
7-20
89
9-1
1044
11-100
1262
13-14
141
15104
16-328
17330
18-128
1920
20-1
21656
22-2208
232476
24-1176
25263
26-27
271
282624
29-10144
3013992
31-8880
322804
33-452
3435
35-1
3615744
37-66112
38102384
39-75760
4029512
41-6336
42744
43-44
441
4567584

[2,-1,5,-5,1,10,-20,9,-1,44,-100,62,-14,1,104,
 -328,330,-128,20,-1,656,-2208,2476,-1176,263,-27,
 1,2624,-10144,13992,-8880,2804,-452,35,-1,15744,
 -66112,102384,-75760,29512,-6336,744,-44,1,67584]