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A133705 as a simple table

na(n)
11
21
3-3
41
5-1
6-3
71
8-3
9-1
10-1
111
12-1
13-1
14-1
15-3
161
17-3
18-3
19-1
20-1
211
221
23-1
24-1
25-1
26-1
27-1
28-3
291
30-3
31-1
32-1
33-1
34-1
35-1
36-1
371
38-3
39-1
40-1
41-3
42-1
43-1
44-1
45-1
461

[1,1,-3,1,-1,-3,1,-3,-1,-1,1,-1,-1,-1,-3,1,-3,-3,
 -1,-1,1,1,-1,-1,-1,-1,-1,-3,1,-3,-1,-1,-1,-1,-1,
 -1,1,-3,-1,-1,-3,-1,-1,-1,-1,1]