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A084490 as a simple table

na(n)
11
22
33
45
54
66
77
88
99
1011
1110
1213
1312
1414
1517
1615
1716
1819
1920
2018
2123
2222
2321
2424
2525
2626
2727
2828
2929
3031
3130
3232
3334
3433
3535
3636
3739
3837
3938
4040
4142
4243
4341
4444
4547
4646
4745
4849
4948
5050
5151
5253
5352
5455
5554
5658
5756
5857
5959
6063
6160
6261
6362
6466
6564
6667
6765
6871
6968
7070
7169
7273

[1,2,3,5,4,6,7,8,9,11,10,13,12,14,17,15,16,19,20,
 18,23,22,21,24,25,26,27,28,29,31,30,32,34,33,35,
 36,39,37,38,40,42,43,41,44,47,46,45,49,48,50,51,
 53,52,55,54,58,56,57,59,63,60,61,62,66,64,67,65,
 71,68,70,69,73]