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A289555 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
1111
1212
1313
1414
1515
1616
1717
1818
1919
2020
2121
2222
2323
2425
2526
2627
2728
2829
2930
3031
3133
3234
3335
3437
3538
3639
3741
3842
3943
4044
4145
4246
4347
4449
4550
4651
4752
4853
4955
5057
5158
5259
5361
5462
5563
5665
5766
5867
5968
6069
6170
6271
6373
6474
6575
6676
6777

[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,
 20,21,22,23,25,26,27,28,29,30,31,33,34,35,37,38,
 39,41,42,43,44,45,46,47,49,50,51,52,53,55,57,58,
 59,61,62,63,65,66,67,68,69,70,71,73,74,75,76,77]