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A370957 as a simple table

na(n)
11
22
33
4-4
55
66
77
8-16
918
10-10
1111
12-12
1313
14-14
1515
16-16
1717
18-18
1919
2020
21-42
2244
2323
24-24
2525
26-52
2754
28-56
2958
30-60
3162
32-64
3366
3434
35-70
3672
37-74
3876
39-78
4080
41-82
4284
43-86
4488
45-90
4692
47-94
4896
49-98
50100
51-102
52104
53-53
5454
5555
5656
57-171
58-58
59177
6060
61-183
6262
63-63
64128
65-130
66132
67-134
68136
69-138
70140
71-142

[1,2,3,-4,5,6,7,-16,18,-10,11,-12,13,-14,15,-16,
 17,-18,19,20,-42,44,23,-24,25,-52,54,-56,58,-60,
 62,-64,66,34,-70,72,-74,76,-78,80,-82,84,-86,88,
 -90,92,-94,96,-98,100,-102,104,-53,54,55,56,-171,
 -58,177,60,-183,62,-63,128,-130,132,-134,136,-138,
 140,-142]