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A073445 as a simple table

na(n)
10
2-1
30
41
50
6-1
70
81
90
10-1
110
121
13-1
140
150
160
171
180
19-1
200
210
220
231
24-1
250
261
270
28-1
290
301
31-1
320
330
340
351
36-1
370
380
390
401
410
42-1
430
440
450
461
47-1
480
491
500
51-1
520
530
540
551
56-1
570
581
59-1
600
610
620
631
64-1
650
660
670
680
690
701
71-1
720
731
740
75-1
760
771
780
79-1
800
811
82-1
830
840
850
860
870
880
890
900
910
920
930
941
95-1
960
971
98-1
990
1000
1010
1021
1030
104-1
1050
1060
1070
1080
1090
1100
1110
1121
1130
114-1
1150

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