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A131331 as a simple table

na(n)
01
10
21
31
40
51
6-1
72
80
91
102
11-1
123
130
141
15-3
164
17-1
184
190
201
215
22-4
237
24-1
255
260
271
28-8
299
30-5
3111
32-1
336
340
351
3613
37-12
3816
39-6
4016
41-1
427
430
441
45-21
4622
47-17
4827
49-7
5022
51-1
528
530
541

[1,0,1,1,0,1,-1,2,0,1,2,-1,3,0,1,-3,4,-1,4,0,1,5,
 -4,7,-1,5,0,1,-8,9,-5,11,-1,6,0,1,13,-12,16,-6,16,
 -1,7,0,1,-21,22,-17,27,-7,22,-1,8,0,1]