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A104887 as a simple table

na(n)
12
23
32
45
53
62
77
85
93
102
1111
127
135
143
152
1613
1711
187
195
203
212
2217
2313
2411
257
265
273
282
2919
3017
3113
3211
337
345
353
362
3723
3819
3917
4013
4111
427
435
443
452
4629
4723
4819
4917
5013
5111
527
535
543
552
5631
5729
5823
5919
6017
6113
6211
637
645
653
662
6737
6831
6929
7023
7119
7217
7313
7411
757
765
773
782
7941
8037
8131
8229

[2,3,2,5,3,2,7,5,3,2,11,7,5,3,2,13,11,7,5,3,2,17,
 13,11,7,5,3,2,19,17,13,11,7,5,3,2,23,19,17,13,11,
 7,5,3,2,29,23,19,17,13,11,7,5,3,2,31,29,23,19,17,
 13,11,7,5,3,2,37,31,29,23,19,17,13,11,7,5,3,2,41,
 37,31,29]