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A015549 as a simple table

na(n)
01
10
21
30
40
50
60
70
80
90
10-1
110
12-1
130
14-1
150
16-1
170
180
190
201
210
220
230
240
250
261
270
281
290
300
310
320
330
340
350
360
370
380
390
400
410
42-1
430
440
450
461
470
480
490
50-1
510
520
530
540
550
560
570
580
590
600
610
620
630
641
650
660
670
68-1
690
700
710
721
730
740
750
760
770
780
790
800

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