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A083794 as a simple table

na(n)
11
22
34
45
56
67
78
89
910
1011
1112
1213
1314
1416
1517
1618
1719
1820
1921
2023
2124
2225
2326
2428
2529
2630
2731
2832
2933
3036
3137
3238
3340
3441
3542
3643
3744
3846
3947
4048
4149
4250
4351
4452
4553
4654
4755
4856
4957
5059
5160
5261
5362
5463
5564
5665
5766
5867
5968
6069
6170
6271
6372
6473
6574
6675
6777
6878
6979
7080
7181
7282

[1,2,4,5,6,7,8,9,10,11,12,13,14,16,17,18,19,20,21,
 23,24,25,26,28,29,30,31,32,33,36,37,38,40,41,42,
 43,44,46,47,48,49,50,51,52,53,54,55,56,57,59,60,
 61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,77,
 78,79,80,81,82]