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A073898 as a simple table

na(n)
11
22
34
43
56
65
78
87
99
1011
1110
1213
1312
1415
1517
1619
1714
1821
1916
2023
2125
2227
2318
2429
2531
2633
2735
2837
2920
3039
3122
3241
3343
3445
3547
3649
3724
3851
3953
4055
4126
4257
4328
4459
4561
4663
4730
4865
4967
5069
5171
5273
5332
5475
5577
5679
5781
5883
5934
6085
6136
6287
6389
6491
6593
6695
6738
6897
6999
70101
7140
72103

[1,2,4,3,6,5,8,7,9,11,10,13,12,15,17,19,14,21,16,
 23,25,27,18,29,31,33,35,37,20,39,22,41,43,45,47,
 49,24,51,53,55,26,57,28,59,61,63,30,65,67,69,71,
 73,32,75,77,79,81,83,34,85,36,87,89,91,93,95,38,
 97,99,101,40,103]