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A204979 as a simple table

na(n)
12
23
33
44
55
64
74
85
97
106
1111
125
1313
145
155
166
179
188
1919
207
217
2212
2312
246
2521
2614
2719
286
2929
306
316
327
3311
3410
3513
369
3737
3820
3913
408
4121
428
4315
4413
4513
4613
4724
487
4922
5022

[2,3,3,4,5,4,4,5,7,6,11,5,13,5,5,6,9,8,19,7,7,12,
 12,6,21,14,19,6,29,6,6,7,11,10,13,9,37,20,13,8,21,
 8,15,13,13,13,24,7,22,22]