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A261793 as a simple table

na(n)
11
23
34
45
56
67
78
89
910
1012
1115
1217
1319
1421
1524
1625
1726
1827
1928
2029
2130
2231
2333
2434
2535
2636
2737
2838
2939
3040
3141
3243
3344
3445
3546
3647
3748
3849
3950
4051
4153
4254
4355
4456
4557
4658
4759
4860
4961
5063
5164
5265
5366
5467
5568
5669
5770
5871
5973
6074
6175
6276
6377
6478
6579
6680
6781

[1,3,4,5,6,7,8,9,10,12,15,17,19,21,24,25,26,27,28,
 29,30,31,33,34,35,36,37,38,39,40,41,43,44,45,46,
 47,48,49,50,51,53,54,55,56,57,58,59,60,61,63,64,
 65,66,67,68,69,70,71,73,74,75,76,77,78,79,80,81]