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A335955 as a simple table

na(n)
00
1-1
2-1
31
45
5-1
6-61
717
81385
9-31
10-50521
11691
122702765
13-5461
14-199360981
15929569
1619391512145
17-3202291
18-2404879675441
19221930581
20370371188237525
21-4722116521
22-69348874393137901
23968383680827
2415514534163557086905
25-14717667114151
26-4087072509293123892361

[0,-1,-1,1,5,-1,-61,17,1385,-31,-50521,691,
 2702765,-5461,-199360981,929569,19391512145,
 -3202291,-2404879675441,221930581,370371188237525,
 -4722116521,-69348874393137901,968383680827,
 15514534163557086905,-14717667114151,
 -4087072509293123892361]