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A199627 as a simple table

na(n)
01
12
21
31
42
52
64
77
88
99
1012
1115
1216
1317
1420
1523
1624
1725
1828
1931
2032
2133
2236
2339
2440
2541
2644
2747
2848
2949
3052
3155
3256
3357
3460
3563
3664
3765
3868
3971
4072
4173
4276
4379
4480
4581
4684
4787
4888
4989
5092
5195
5296
5397
54100
55103
56104
57105
58108
59111

[1,2,1,1,2,2,4,7,8,9,12,15,16,17,20,23,24,25,28,
 31,32,33,36,39,40,41,44,47,48,49,52,55,56,57,60,
 63,64,65,68,71,72,73,76,79,80,81,84,87,88,89,92,
 95,96,97,100,103,104,105,108,111]