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A321894 as a simple table

na(n)
11
21
3-1
41
51
60
71
8-1
91
10-2
111
120
13-1
140
151
16-1
171
181
190
200
211
221
23-1
240
250
262
27-1
28-1
291
300
311
32-1
330
340
351
36-1
371
38-3
390
401
410
420
43-1
440
451
460
470
48-1
490
500
511
52-1
531
54-2
551
561
57-1
58-1
591
600
61-2
622
63-1
641
65-1
660
670

[1,1,-1,1,1,0,1,-1,1,-2,1,0,-1,0,1,-1,1,1,0,0,1,1,
 -1,0,0,2,-1,-1,1,0,1,-1,0,0,1,-1,1,-3,0,1,0,0,-1,
 0,1,0,0,-1,0,0,1,-1,1,-2,1,1,-1,-1,1,0,-2,2,-1,1,
 -1,0,0]