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A060021 as a simple table

na(n)
21
31
42
52
63
73
84
94
104
115
125
135
146
156
167
176
188
197
209
217
2210
238
2411
258
2612
279
2813
299
3014
319
3215
3311
3416
3510
3617
3710
3818
3913
4019
4111
4220
4311
4421
4515
4622
4712
4823

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