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A111228 as a simple table

na(n)
01
12
23
34
45
56
67
78
89
912
1014
1116
1218
1321
1423
1525
1627
1729
1832
1934
2036
2138
2241
2343
2445
2547
2649
2752
2854
2956
3058
3161
3263
3365
3467
3569
3672
3774
3876
3978
4081
4183
4285
4387
4489
4592
4694
4796
4898
49121
50123
51125
52127
53129
54141
55143
56145
57147
58149
59161
60163
61165
62167
63169
64181
65183

[1,2,3,4,5,6,7,8,9,12,14,16,18,21,23,25,27,29,32,
 34,36,38,41,43,45,47,49,52,54,56,58,61,63,65,67,
 69,72,74,76,78,81,83,85,87,89,92,94,96,98,121,123,
 125,127,129,141,143,145,147,149,161,163,165,167,
 169,181,183]