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A018837 as a simple table

na(n)
00
13
22
33
42
53
64
75
84
95
106
117
126
137
148
159
168
179
1810
1911
2010
2111
2212
2313
2412
2513
2614
2715
2814
2915
3016
3117
3216
3317
3418
3519
3618
3719
3820
3921
4020
4121
4222
4323
4422
4523
4624
4725
4824
4925
5026
5127
5226
5327
5428
5529
5628
5729
5830
5931
6030
6131
6232
6333
6432
6533
6634
6735
6834
6935
7036
7137
7236
7337
7438
7539
7638
7739
7840
7941
8040
8141
8242
8343

[0,3,2,3,2,3,4,5,4,5,6,7,6,7,8,9,8,9,10,11,10,11,
 12,13,12,13,14,15,14,15,16,17,16,17,18,19,18,19,
 20,21,20,21,22,23,22,23,24,25,24,25,26,27,26,27,
 28,29,28,29,30,31,30,31,32,33,32,33,34,35,34,35,
 36,37,36,37,38,39,38,39,40,41,40,41,42,43]