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A127951 as a simple table

na(n)
11
2-1
32
4-3
51
63
7-5
8-3
95
104
11-7
12-10
132
1411
155
16-9
17-20
18-10
1915
2019
216
22-11
23-33
24-35
255
2639
2729
287
29-13
30-49
31-77
32-35
3349
3477
3541
368
37-15
38-68
39-140
40-126
4114
42140
43132
4455
459
46-17
47-90
48-228
49-294
50-126
51168
52300
53207
5471
5510

[1,-1,2,-3,1,3,-5,-3,5,4,-7,-10,2,11,5,-9,-20,-10,
 15,19,6,-11,-33,-35,5,39,29,7,-13,-49,-77,-35,49,
 77,41,8,-15,-68,-140,-126,14,140,132,55,9,-17,-90,
 -228,-294,-126,168,300,207,71,10]