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A014051 as a simple table

na(n)
01
1-1
21
30
40
50
60
71
8-1
91
100
110
120
130
140
150
160
170
180
190
200
21-1
221
23-1
240
250
260
270
28-1
291
30-1
310
320
330
340
350
360
370
380
390
400
410
421
43-1
441
450
460
470
480
491
50-1
511
520
530
540
550
560
570
580
590
600
610
620
63-1
641
65-1
660
670
680
690
70-1
711
72-1
730
740
750
760
770
780
790
800

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