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A239641 as a simple table

na(n)
11
2-1
3-2
4-1
5-4
62
7-6
81
9-2
104
11-10
124
13-12
146
1512
16-1
17-16
182
19-18
208
2118
2210
23-22
24-4
25-4
2612
27-2
2812
29-28
30-12
31-30
32-3
3330
3416
3536
360
37-36
3818
3936
40-8
41-40
42-18
43-42
4420
454
4622
47-46
480
49-6
504
5148
5224
53-52
542
5560
56-12
5754
5828
59-58
60-40
61-60
6230
6318
64-1
6584
66-30
67-66
6832
6966
70-36
71-70
720

[1,-1,-2,-1,-4,2,-6,1,-2,4,-10,4,-12,6,12,-1,-16,
 2,-18,8,18,10,-22,-4,-4,12,-2,12,-28,-12,-30,-3,
 30,16,36,0,-36,18,36,-8,-40,-18,-42,20,4,22,-46,0,
 -6,4,48,24,-52,2,60,-12,54,28,-58,-40,-60,30,18,
 -1,84,-30,-66,32,66,-36,-70,0]