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A366562 as a simple table

na(n)
11
20
3-2
40
5-4
60
7-6
80
9-6
100
11-10
120
13-12
140
158
160
17-16
180
19-18
200
2112
220
23-22
240
25-20
260
27-18
280
29-28
300
31-30
320
3320
340
3524
360
37-36
380
3924
400
41-40
420
43-42
440
4524
460
47-46
480
49-42
500
5132
520
53-52
540
5540
560
5736
580
59-58
600
61-60
620
6336
640
6548
660
67-66
680
6944
700
71-70
720
73-72
740

[1,0,-2,0,-4,0,-6,0,-6,0,-10,0,-12,0,8,0,-16,0,
 -18,0,12,0,-22,0,-20,0,-18,0,-28,0,-30,0,20,0,24,
 0,-36,0,24,0,-40,0,-42,0,24,0,-46,0,-42,0,32,0,
 -52,0,40,0,36,0,-58,0,-60,0,36,0,48,0,-66,0,44,0,
 -70,0,-72,0]