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A128256 as a simple table

na(n)
11
2-1
31
42
50
61
7-2
82
91
101
113
120
133
142
151
16-3
173
183
195
203
211
224
230
246
258
268
274
281
29-4
304
316
3214
3316
3412
355
361
375
380
3910
4020
4130
4228
4317
446
451
46-5
475
4810
4930
5050
5158
5245
5323
547
551

[1,-1,1,2,0,1,-2,2,1,1,3,0,3,2,1,-3,3,3,5,3,1,4,0,
 6,8,8,4,1,-4,4,6,14,16,12,5,1,5,0,10,20,30,28,17,
 6,1,-5,5,10,30,50,58,45,23,7,1]