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A078606 as a simple table

na(n)
4-2
5-1
64
7-5
82
97
103
11-3
12-11
13-4
1413
15-14
1616
176
18-6
19-20
20-7
2122
228
2325
249
25-29
26-10
2731
28-32
2911
3034
31-38
32-13
33-41
3414
3515
36-15
37-47
3849
39-50
4052
4118
42-18
43-19
4458
45-59
4620
47-21
4867
49-68
5023
5170
5224
53-24
54-25
55-77
5679
5727
58-27
59-83
60-28
6185
6288
63-92
64-31
6594
66-95
67-33
68-101
69-104
7035
71106
7236
73-110
74112
7538

[-2,-1,4,-5,2,7,3,-3,-11,-4,13,-14,16,6,-6,-20,-7,
 22,8,25,9,-29,-10,31,-32,11,34,-38,-13,-41,14,15,
 -15,-47,49,-50,52,18,-18,-19,58,-59,20,-21,67,-68,
 23,70,24,-24,-25,-77,79,27,-27,-83,-28,85,88,-92,
 -31,94,-95,-33,-101,-104,35,106,36,-110,112,38]