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A185018 as a simple table

na(n)
01
1-2
21
31
4-2
51
60
71
8-2
91
100
110
121
13-2
141
150
160
170
181
19-2
201
210
220
230
240
251
26-2
271
280
290
300
310
320
331
34-2
351
360
370
380
390
400
410
421
43-2
441
450
460
470
480
490
500
510
521
53-2
541
550
560
570
580
590
600
610
620
631
64-2
651
660
670
680
690
700
710
720
730
740
751
76-2
771
780
790
800
810
820
830
840
850
860
870
881
89-2
901

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