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A051996 as a simple table

na(n)
11
2-1
31
45
5-1
63
7-7
81
9-3
10-5
115
12-11
131
14-1
151
1613
17-1
187
19-15
20-3
215
22-1
231
243
251
26-5
2721
28-1
291
301
31-13
32-15
333
3415
35-31
361
37-1
381
3917
40-35
41-7
425
43-1
441
4519
46-39
47-3
48-5
495
5041
513
525
53-23
541
551
56-3
5717
5813
59-1
60-19
61-29
621
63-3
645
65-31
6621
6733
68-3
69-7
7035
713
721
73-15
74-19
75-39
765
7741
78-21
79-11
8011
815
821
835
84-55
8555
8629
875
88-11
891
90-35
9135
921
93-7
94-3
951
961
97-15
9821

[1,-1,1,5,-1,3,-7,1,-3,-5,5,-11,1,-1,1,13,-1,7,
 -15,-3,5,-1,1,3,1,-5,21,-1,1,1,-13,-15,3,15,-31,1,
 -1,1,17,-35,-7,5,-1,1,19,-39,-3,-5,5,41,3,5,-23,1,
 1,-3,17,13,-1,-19,-29,1,-3,5,-31,21,33,-3,-7,35,3,
 1,-15,-19,-39,5,41,-21,-11,11,5,1,5,-55,55,29,5,
 -11,1,-35,35,1,-7,-3,1,1,-15,21]