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A161780 as a simple table

na(n)
11
2-2
31
4-2
51
61
71
80
90
101
11-2
12-2
131
140
151
164
170
180
190
200
211
22-2
23-2
240
251
260
270
281
290
300
31-2
320
330
340
350
361
371
381
390
400
411
420
430
440
451
464
470
480
490
500
510
520
530
540
551
56-2
57-2
58-2
59-2
600
611
620
630
640
650
661
67-2
680
690
700
710
720
730
740
750
760
770
781
79-2
804
810
820
830
840
851
860
870
880
890
900
911
924
930
941

[1,-2,1,-2,1,1,1,0,0,1,-2,-2,1,0,1,4,0,0,0,0,1,-2,
 -2,0,1,0,0,1,0,0,-2,0,0,0,0,1,1,1,0,0,1,0,0,0,1,4,
 0,0,0,0,0,0,0,0,1,-2,-2,-2,-2,0,1,0,0,0,0,1,-2,0,
 0,0,0,0,0,0,0,0,0,1,-2,4,0,0,0,0,1,0,0,0,0,0,1,4,
 0,1]