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A165890 as a simple table

na(n)
01
11
2-2
31
41
50
6-2
70
81
91
1010
1115
12-52
1315
1410
151
161
1744
18484
19-44
20-970
21-44
22484
2344
241
251
26150
275933
2822792
29466
30-58684
31466
3222792
335933
34150
351
361
37472
3858586
39682040
402085135
41-682512
42-4287444
43-682512
442085135
45682040
4658586
47472
481

[1,1,-2,1,1,0,-2,0,1,1,10,15,-52,15,10,1,1,44,484,
 -44,-970,-44,484,44,1,1,150,5933,22792,466,-58684,
 466,22792,5933,150,1,1,472,58586,682040,2085135,
 -682512,-4287444,-682512,2085135,682040,58586,472,
 1]