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A232741 as a simple table

na(n)
11
22
33
44
55
67
78
89
910
1011
1113
1214
1315
1416
1517
1619
1720
1821
1922
2023
2124
2225
2326
2427
2528
2629
2731
2832
2933
3034
3135
3237
3338
3439
3540
3641
3743
3844
3945
4046
4147
4248
4349
4450
4551
4652
4753
4855
4956
5057
5158
5259
5361
5462
5563
5664
5765
5867
5968
6069
6170
6271
6372
6473
6574
6675
6776

[1,2,3,4,5,7,8,9,10,11,13,14,15,16,17,19,20,21,22,
 23,24,25,26,27,28,29,31,32,33,34,35,37,38,39,40,
 41,43,44,45,46,47,48,49,50,51,52,53,55,56,57,58,
 59,61,62,63,64,65,67,68,69,70,71,72,73,74,75,76]