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A349226 as a simple table

na(n)
01
11
2-1
31
4-2
51
61
7-6
89
9-4
101
11-33
12171
13-247
14108
151
16-289
178619
18-44023
1963340
20-27648
211
22-3413
23911744
24-26978398
25137635215
26-197965148
2786400000
281
29-50070
30160195328
31-42565306462
321258841772303
33-6421706556188
349236348345088
35-4031078400000

[1,1,-1,1,-2,1,1,-6,9,-4,1,-33,171,-247,108,1,
 -289,8619,-44023,63340,-27648,1,-3413,911744,
 -26978398,137635215,-197965148,86400000,1,-50070,
 160195328,-42565306462,1258841772303,
 -6421706556188,9236348345088,-4031078400000]