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A137409 as a simple table

na(n)
11
22
33
44
56
67
78
89
910
1011
1112
1214
1315
1416
1518
1619
1720
1821
1922
2023
2124
2226
2327
2428
2530
2631
2732
2833
2934
3035
3136
3238
3339
3440
3542
3643
3744
3845
3946
4047
4148
4249
4350
4451
4552
4654
4755
4856
4957
5058
5159
5260
5362
5463
5564
5666
5767
5868
5969
6070
6171
6272
6374
6475
6576
6677
6778
6879
6980
7081
7182
7283

[1,2,3,4,6,7,8,9,10,11,12,14,15,16,18,19,20,21,22,
 23,24,26,27,28,30,31,32,33,34,35,36,38,39,40,42,
 43,44,45,46,47,48,49,50,51,52,54,55,56,57,58,59,
 60,62,63,64,66,67,68,69,70,71,72,74,75,76,77,78,
 79,80,81,82,83]