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A155935 as a simple table

na(n)
11
23
34
45
57
69
710
811
912
1013
1114
1215
1316
1417
1519
1620
1721
1822
1923
2025
2126
2227
2328
2429
2530
2631
2733
2834
2935
3036
3137
3239
3340
3441
3542
3643
3745
3846
3947
4048
4149
4250
4351
4452
4553
4654
4755
4857
4958
5059
5160
5261
5363
5464
5565
5667
5768
5869
5970
6071
6173
6275
6376
6477
6579
6680
6781

[1,3,4,5,7,9,10,11,12,13,14,15,16,17,19,20,21,22,
 23,25,26,27,28,29,30,31,33,34,35,36,37,39,40,41,
 42,43,45,46,47,48,49,50,51,52,53,54,55,57,58,59,
 60,61,63,64,65,67,68,69,70,71,73,75,76,77,79,80,
 81]