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A247498 as a simple table

na(n)
01
10
21
3-1
41
51
60
70
82
91
105
11-2
123
133
141
150
160
172
188
194
201
21-61
2216
23-3
2418
2515
265
271
280
290
302
3132
3252
3324
346
351
361385
37-272
3863
3948
40165
41110
4235
437
441
450
460
472
48128
49484
50480
51198
5248
538
541
55-50521
567936
57-1383
58528
591395
602000
611085
62322
6363
649
651

[1,0,1,-1,1,1,0,0,2,1,5,-2,3,3,1,0,0,2,8,4,1,-61,
 16,-3,18,15,5,1,0,0,2,32,52,24,6,1,1385,-272,63,
 48,165,110,35,7,1,0,0,2,128,484,480,198,48,8,1,
 -50521,7936,-1383,528,1395,2000,1085,322,63,9,1]