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A252706 as a simple table

na(n)
01
1-2
20
32
4-2
50
64
7-4
80
96
10-8
110
1210
13-12
140
1516
16-18
170
1824
19-28
200
2136
22-40
230
2452
25-58
260
2774
28-84
290
30104
31-116
320
33144
34-160
350
36198
37-220
380
39268
40-296
410
42360
43-396
440
45480
46-528
470
48634
49-694
500
51832
52-908
530
541084
55-1184
560
571404
58-1528
590

[1,-2,0,2,-2,0,4,-4,0,6,-8,0,10,-12,0,16,-18,0,24,
 -28,0,36,-40,0,52,-58,0,74,-84,0,104,-116,0,144,
 -160,0,198,-220,0,268,-296,0,360,-396,0,480,-528,
 0,634,-694,0,832,-908,0,1084,-1184,0,1404,-1528,0]