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A248886 as a simple table

na(n)
01
1-2
21
3-2
43
5-2
62
70
82
9-2
101
11-4
120
13-2
143
15-2
162
170
184
19-2
202
210
220
23-2
241
25-4
262
27-2
282
29-2
303
31-2
320
33-2
342
35-2
362
370
382
39-4
404
410
420
430
441
45-2
464
470
482
49-4
502
51-2
521
53-6
540
55-2
562
570
580
59-2
604
61-2
620
63-2
642
650
664
670
684
69-2
701
71-2
720
73-2
744
750
760
77-2

[1,-2,1,-2,3,-2,2,0,2,-2,1,-4,0,-2,3,-2,2,0,4,-2,
 2,0,0,-2,1,-4,2,-2,2,-2,3,-2,0,-2,2,-2,2,0,2,-4,4,
 0,0,0,1,-2,4,0,2,-4,2,-2,1,-6,0,-2,2,0,0,-2,4,-2,
 0,-2,2,0,4,0,4,-2,1,-2,0,-2,4,0,0,-2]