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A276568 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
1111
1212
1313
1414
1515
1616
1717
1818
1920
2021
2122
2223
2324
2425
2526
2627
2728
2829
2930
3032
3133
3234
3335
3436
3537
3638
3739
3840
3941
4042
4143
4244
4345
4446
4547
4648
4750
4851
4952
5053
5154
5255
5356
5457
5558
5660
5761
5862
5963
6064
6165
6266
6367
6468
6569
6670
6771
6872
6974
7075
7176
7277
7378
7480
7581
7682
7783
7884
7986
8087
8188
8289
8390
8491

[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,20,
 21,22,23,24,25,26,27,28,29,30,32,33,34,35,36,37,
 38,39,40,41,42,43,44,45,46,47,48,50,51,52,53,54,
 55,56,57,58,60,61,62,63,64,65,66,67,68,69,70,71,
 72,74,75,76,77,78,80,81,82,83,84,86,87,88,89,90,
 91]