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A047201 as a simple table

na(n)
11
22
33
44
56
67
78
89
911
1012
1113
1214
1316
1417
1518
1619
1721
1822
1923
2024
2126
2227
2328
2429
2531
2632
2733
2834
2936
3037
3138
3239
3341
3442
3543
3644
3746
3847
3948
4049
4151
4252
4353
4454
4556
4657
4758
4859
4961
5062
5163
5264
5366
5467
5568
5669
5771
5872
5973
6074
6176
6277
6378
6479
6581
6682
6783
6884
6986
7087

[1,2,3,4,6,7,8,9,11,12,13,14,16,17,18,19,21,22,23,
 24,26,27,28,29,31,32,33,34,36,37,38,39,41,42,43,
 44,46,47,48,49,51,52,53,54,56,57,58,59,61,62,63,
 64,66,67,68,69,71,72,73,74,76,77,78,79,81,82,83,
 84,86,87]