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A062770 as a simple table

na(n)
12
23
34
45
56
67
78
89
910
1011
1113
1214
1315
1416
1517
1619
1721
1822
1923
2025
2126
2227
2329
2430
2531
2632
2733
2834
2935
3036
3137
3238
3339
3441
3542
3643
3746
3847
3949
4051
4153
4255
4357
4458
4559
4661
4762
4864
4965
5066
5167
5269
5370
5471
5573
5674
5777
5878
5979
6081
6182
6283
6385
6486
6587
6689
6791
6893
6994
7095
7197
72100

[2,3,4,5,6,7,8,9,10,11,13,14,15,16,17,19,21,22,23,
 25,26,27,29,30,31,32,33,34,35,36,37,38,39,41,42,
 43,46,47,49,51,53,55,57,58,59,61,62,64,65,66,67,
 69,70,71,73,74,77,78,79,81,82,83,85,86,87,89,91,
 93,94,95,97,100]