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A171580 as a simple table

na(n)
12
22
34
43
54
65
71
86
91
105
114
123
136
145
159
167
174
185
1915
2019
214
2227
234
2412
256
2638
2730
285
2927
3013
3115
322
3310
347
354
367
379
3832
3910
402
4110
4233
4310
442
4575
4617
474
485
496
5012
5121
526
53150
5414
557
5611
5730
5827
5951
6029
6170
6258
6310
6410
6537
6645
6779
68212
69177
7017
714
7233
7316
7454
7524
7620
77222
78105
799
8083
8110

[2,2,4,3,4,5,1,6,1,5,4,3,6,5,9,7,4,5,15,19,4,27,4,
 12,6,38,30,5,27,13,15,2,10,7,4,7,9,32,10,2,10,33,
 10,2,75,17,4,5,6,12,21,6,150,14,7,11,30,27,51,29,
 70,58,10,10,37,45,79,212,177,17,4,33,16,54,24,20,
 222,105,9,83,10]