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A220658 as a simple table

na(n)
00
11
21
32
42
52
63
73
83
94
104
114
125
135
145
156
166
176
186
197
207
217
227
238
248
258
268
279
289
299
309
3110
3210
3310
3410
3511
3611
3711
3811
3912
4012
4112
4212
4313
4413
4513
4613
4714
4814
4914
5014
5115
5215
5315
5415
5516
5616
5716
5816
5917
6017
6117
6217
6318
6418
6518
6618
6719
6819
6919
7019
7120
7220

[0,1,1,2,2,2,3,3,3,4,4,4,5,5,5,6,6,6,6,7,7,7,7,8,
 8,8,8,9,9,9,9,10,10,10,10,11,11,11,11,12,12,12,12,
 13,13,13,13,14,14,14,14,15,15,15,15,16,16,16,16,
 17,17,17,17,18,18,18,18,19,19,19,19,20,20]