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A105048 as a simple table

na(n)
11
23
34
45
56
67
78
89
910
1011
1112
1214
1316
1417
1518
1619
1720
1821
1922
2023
2124
2228
2329
2431
2532
2634
2735
2837
2938
3042
3145
3247
3350
3451
3552
3653
3756
3860
3963
4065
4166
4267
4368
4470
4571
4672
4774
4876
4977
5079
5180
5283
5384
5485
5586
5687
5795
5896
5997
6099
61100
62101
63103
64105
65106
66111
67113
68114
69115

[1,3,4,5,6,7,8,9,10,11,12,14,16,17,18,19,20,21,22,
 23,24,28,29,31,32,34,35,37,38,42,45,47,50,51,52,
 53,56,60,63,65,66,67,68,70,71,72,74,76,77,79,80,
 83,84,85,86,87,95,96,97,99,100,101,103,105,106,
 111,113,114,115]