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A128180 as a simple table

na(n)
11
2-1
32
42
5-1
63
7-2
83
9-1
104
113
12-2
134
14-1
155
16-3
174
18-2
195
20-1
216
224
23-3
245
25-2
266
27-1
287
29-4
305
31-3
326
33-2
347
35-1
368
375
38-4
396
40-3
417
42-2
438
44-1
459
46-5
476
48-4
497
50-3
518
52-2
539
54-1
5510

[1,-1,2,2,-1,3,-2,3,-1,4,3,-2,4,-1,5,-3,4,-2,5,-1,
 6,4,-3,5,-2,6,-1,7,-4,5,-3,6,-2,7,-1,8,5,-4,6,-3,
 7,-2,8,-1,9,-5,6,-4,7,-3,8,-2,9,-1,10]