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A175857 as a simple table

na(n)
11
22
33
44
55
66
77
810
911
1012
1113
1216
1317
1418
1519
1620
1721
1822
1923
2026
2127
2228
2329
2430
2531
2634
2735
2836
2937
3040
3141
3242
3343
3444
3545
3646
3747
3848
3949
4050
4151
4252
4353
4456
4557
4658
4759
4860
4961
5064
5165
5266
5367
5468
5569
5670
5771
5872
5973
6076
6177
6278
6379
6480
6581
6682
6783
6884
6985
7086
7187
7288

[1,2,3,4,5,6,7,10,11,12,13,16,17,18,19,20,21,22,
 23,26,27,28,29,30,31,34,35,36,37,40,41,42,43,44,
 45,46,47,48,49,50,51,52,53,56,57,58,59,60,61,64,
 65,66,67,68,69,70,71,72,73,76,77,78,79,80,81,82,
 83,84,85,86,87,88]