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A172086 as a simple table

na(n)
02
1-2
21
3-1
4-1
51
61
7-1
8-1
91
105
11-5
12-691
13691
147
15-7
16-3617
173617
1843867
19-43867
20-174611
21174611
22854513
23-854513
24-236364091
25236364091
268553103
27-8553103
28-23749461029
2923749461029
308615841276005
31-8615841276005
32-7709321041217
337709321041217
342577687858367
35-2577687858367

[2,-2,1,-1,-1,1,1,-1,-1,1,5,-5,-691,691,7,-7,
 -3617,3617,43867,-43867,-174611,174611,854513,
 -854513,-236364091,236364091,8553103,-8553103,
 -23749461029,23749461029,8615841276005,
 -8615841276005,-7709321041217,7709321041217,
 2577687858367,-2577687858367]