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A143998 as a simple table

na(n)
10
21
31
42
53
62
73
84
94
103
113
126
136
146
153
164
177
189
199
207
214
225
239
2411
2512
2611
279
285
296
3010
3113
3215
3315
3413
3510
366
376
3812
3915
4018
4118
4218
4315
4412
456
467
4713
4818
4921
5022
5122
5221
5318
5413
557
568
5715
5820
5924
6026
6127
6226
6324
6420
6515
668
679
6816
6922
7027
7130
7231
7331
7430
7527
7622
7716
789
799
8018
8124
8230

[0,1,1,2,3,2,3,4,4,3,3,6,6,6,3,4,7,9,9,7,4,5,9,11,
 12,11,9,5,6,10,13,15,15,13,10,6,6,12,15,18,18,18,
 15,12,6,7,13,18,21,22,22,21,18,13,7,8,15,20,24,26,
 27,26,24,20,15,8,9,16,22,27,30,31,31,30,27,22,16,
 9,9,18,24,30]