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A181435 as a simple table

na(n)
11
2-4
3-1
40
5-1
61
7-1
80
90
101
11-1
120
13-1
141
151
160
17-1
180
19-1
200
211
221
23-1
240
250
261
270
280
29-1
30-1
31-1
320
331
341
351
360
37-1
381
391
400
41-1
42-1
43-1
440
450
461
47-1
480
490
500
511
520
53-1
540
551
560
571
581
59-1
600
61-1
621
630
640
651
66-1
67-1
680
691
70-1
71-1
720
73-1
741
750
760
771

[1,-4,-1,0,-1,1,-1,0,0,1,-1,0,-1,1,1,0,-1,0,-1,0,
 1,1,-1,0,0,1,0,0,-1,-1,-1,0,1,1,1,0,-1,1,1,0,-1,
 -1,-1,0,0,1,-1,0,0,0,1,0,-1,0,1,0,1,1,-1,0,-1,1,0,
 0,1,-1,-1,0,1,-1,-1,0,-1,1,0,0,1]