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A281965 as a simple table

na(n)
01
11
21
32
42
52
63
74
83
93
105
114
124
135
147
155
165
179
186
196
208
219
227
237
2413
258
268
2712
2811
299
3010
3115
3210
3310
3416
3513
3611
3714
3817
3912
4012
4120
4214
4313
4418
4519
4614
4715
4824
4915
5015
5122
5220
5316
5419
5526
5617
5717
5827
5920
6018
6123
6227
6319
6419
6533
6620
6720
6828
6927
7021
7123

[1,1,1,2,2,2,3,4,3,3,5,4,4,5,7,5,5,9,6,6,8,9,7,7,
 13,8,8,12,11,9,10,15,10,10,16,13,11,14,17,12,12,
 20,14,13,18,19,14,15,24,15,15,22,20,16,19,26,17,
 17,27,20,18,23,27,19,19,33,20,20,28,27,21,23]