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A237270 as a simple table

na(n)
11
23
32
42
57
63
73
812
94
104
1115
125
133
145
159
169
176
186
1928
207
217
2212
2312
248
258
268
2731
289
299
3039
3110
3210
3342
3411
355
365
3711
3818
3918
4012
4112
4260
4313
445
4513
4621
4721
4814
496
506
5114
5256
5315
5415
5572
5616
5716
5863
5917
607
617
6217
6327
6427
6518
6612
6718
6891
6919
7019
7130
7230
7320
748
758
7620
7790

[1,3,2,2,7,3,3,12,4,4,15,5,3,5,9,9,6,6,28,7,7,12,
 12,8,8,8,31,9,9,39,10,10,42,11,5,5,11,18,18,12,12,
 60,13,5,13,21,21,14,6,6,14,56,15,15,72,16,16,63,
 17,7,7,17,27,27,18,12,18,91,19,19,30,30,20,8,8,20,
 90]