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A283972 as a simple table

na(n)
10
21
31
43
54
64
74
87
98
109
119
1210
1311
1411
1511
1615
1716
1817
1917
2019
2120
2220
2320
2422
2523
2624
2723
2825
2926
3026
3126
3231
3332
3433
3533
3635
3736
3836
3936
4039
4140
4241
4341
4442
4543
4643
4743
4846
4947
5048
5147
5250
5351
5450
5549
5653
5754
5855
5953
6056
6157
6257
6357
6463
6564
6665
6765
6867
6968
7068
7168
7271
7372
7473
7573
7674
7775
7875
7975
8079
8180
8281
8381
8483
8584
8684
8784
8886
8987
9088
9187
9289

[0,1,1,3,4,4,4,7,8,9,9,10,11,11,11,15,16,17,17,19,
 20,20,20,22,23,24,23,25,26,26,26,31,32,33,33,35,
 36,36,36,39,40,41,41,42,43,43,43,46,47,48,47,50,
 51,50,49,53,54,55,53,56,57,57,57,63,64,65,65,67,
 68,68,68,71,72,73,73,74,75,75,75,79,80,81,81,83,
 84,84,84,86,87,88,87,89]