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A167520 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
1112
1213
1314
1415
1516
1617
1718
1819
1920
2021
2122
2223
2324
2425
2526
2627
2728
2830
2931
3032
3133
3234
3335
3436
3537
3638
3739
3840
3941
4042
4143
4244
4345
4446
4548
4649
4750
4851
4952
5053
5154
5255
5356
5457
5558
5659
5760
5861
5962
6063
6164
6265
6366
6468
6569
6670
6771
6872
6973
7074
7175
7276

[1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,
 21,22,23,24,25,26,27,28,30,31,32,33,34,35,36,37,
 38,39,40,41,42,43,44,45,46,48,49,50,51,52,53,54,
 55,56,57,58,59,60,61,62,63,64,65,66,68,69,70,71,
 72,73,74,75,76]