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A339145 as a simple table

na(n)
20
31
4-1
51
6-1
71
8-1
91
10-1
111
12-1
130
140
151
160
17-1
181
190
20-1
211
22-1
231
24-1
250
261
270
28-1
290
301
310
32-1
331
34-1
351
36-1
371
380
390
40-1
410
421
43-1
440
451
460
47-1
480
491
500
51-1
520
530
541
550
56-1
571
580
59-1
601
61-1
620
631
640
65-1
661
67-1
680
690
701
710
72-1
731
740
75-1
761
77-1
781
790

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