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A121684 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
1111
1212
1313
1414
1515
1617
1718
1819
1920
2021
2122
2223
2326
2428
2529
2630
2731
2833
2934
3035
3137
3238
3339
3441
3542
3643
3744
3846
3947
4051
4152
4253
4355
4457
4558
4659
4760
4861
4962
5065
5166
5267
5368
5469
5570
5671
5773
5874
5976
6077
6178
6279
6382
6483
6584
6685
6786
6887
6989
7091
7192
7293
7394
7495
7597

[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,17,18,19,20,
 21,22,23,26,28,29,30,31,33,34,35,37,38,39,41,42,
 43,44,46,47,51,52,53,55,57,58,59,60,61,62,65,66,
 67,68,69,70,71,73,74,76,77,78,79,82,83,84,85,86,
 87,89,91,92,93,94,95,97]