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A046980 as a simple table

na(n)
01
11
20
3-1
4-1
5-1
60
71
81
91
100
11-1
12-1
13-1
140
151
161
171
180
19-1
20-1
21-1
220
231
241
251
260
27-1
28-1
29-1
300
311
321
331
340
35-1
36-1
37-1
380
391
401
411
420
43-1
44-1
45-1
460
471
481
491
500
51-1
52-1
53-1
540
551
561
571
580
59-1
60-1
61-1
620
631
641
651
660
67-1
68-1
69-1
700
711
721
731
740
75-1
76-1
77-1
780
791
801
811
820
83-1
84-1
85-1
860
871
881
891
900
91-1
92-1

[1,1,0,-1,-1,-1,0,1,1,1,0,-1,-1,-1,0,1,1,1,0,-1,
 -1,-1,0,1,1,1,0,-1,-1,-1,0,1,1,1,0,-1,-1,-1,0,1,1,
 1,0,-1,-1,-1,0,1,1,1,0,-1,-1,-1,0,1,1,1,0,-1,-1,
 -1,0,1,1,1,0,-1,-1,-1,0,1,1,1,0,-1,-1,-1,0,1,1,1,
 0,-1,-1,-1,0,1,1,1,0,-1,-1]