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A130717 as a simple table

na(n)
00
11
2-1
30
40
52
6-3
71
80
93
10-5
112
120
134
14-7
153
160
175
18-9
194
200
216
22-11
235
240
257
26-13
276
280
298
30-15
317
320
339
34-17
358
360
3710
38-19
399
400
4111
42-21
4310
440
4512
46-23
4711
480
4913
50-25
5112
520
5314
54-27
5513
560
5715
58-29
5914
600
6116
62-31
6315
640
6517
66-33
6716
680
6918
70-35
7117
720
7319
74-37
7518
760
7720
78-39
7919
800
8121
82-41
8320

[0,1,-1,0,0,2,-3,1,0,3,-5,2,0,4,-7,3,0,5,-9,4,0,6,
 -11,5,0,7,-13,6,0,8,-15,7,0,9,-17,8,0,10,-19,9,0,
 11,-21,10,0,12,-23,11,0,13,-25,12,0,14,-27,13,0,
 15,-29,14,0,16,-31,15,0,17,-33,16,0,18,-35,17,0,
 19,-37,18,0,20,-39,19,0,21,-41,20]