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A016333 as a simple table

na(n)
01
11
20
3-1
4-1
50
61
71
80
9-1
10-1
110
121
131
140
15-1
16-1
170
181
191
200
21-1
22-1
23-1
240
251
261
270
28-1
29-1
300
311
321
330
34-1
35-1
360
371
381
390
40-1
41-1
420
431
441

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