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A325940 as a simple table

na(n)
10
21
3-2
44
5-4
64
7-6
811
9-10
106
11-10
1218
13-12
148
15-20
1626
17-16
1813
19-18
2028
21-28
2212
23-22
2448
25-28
2614
27-36
2838
29-28
3024
31-30
3257
33-44
3418
35-44
3662
37-36
3820
39-52
4074
41-40
4232
43-42
4458
45-72
4624
47-46
48110
49-54
5031
51-68
5268
53-52
5440
55-68
56100
57-76
5830
59-58
60116

[0,1,-2,4,-4,4,-6,11,-10,6,-10,18,-12,8,-20,26,
 -16,13,-18,28,-28,12,-22,48,-28,14,-36,38,-28,24,
 -30,57,-44,18,-44,62,-36,20,-52,74,-40,32,-42,58,
 -72,24,-46,110,-54,31,-68,68,-52,40,-68,100,-76,
 30,-58,116]