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A275319 as a simple table

na(n)
11
23
34
45
57
69
710
811
913
1014
1115
1216
1317
1418
1519
1620
1721
1822
1923
2024
2125
2226
2327
2428
2529
2630
2731
2832
2933
3034
3135
3237
3338
3439
3540
3641
3743
3844
3945
4046
4147
4248
4349
4451
4552
4653
4754
4855
4957
5058
5159
5260
5361
5463
5564
5665
5766
5867
5969
6070
6171
6272
6373
6474
6575
6676

[1,3,4,5,7,9,10,11,13,14,15,16,17,18,19,20,21,22,
 23,24,25,26,27,28,29,30,31,32,33,34,35,37,38,39,
 40,41,43,44,45,46,47,48,49,51,52,53,54,55,57,58,
 59,60,61,63,64,65,66,67,69,70,71,72,73,74,75,76]