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A093506 as a simple table

na(n)
11
22
34
43
55
67
79
86
98
1010
1111
1213
1315
1417
1519
1612
1714
1816
1918
2020
2122
2224
2321
2423
2525
2627
2729
2831
2933
3035
3137
3226
3328
3430
3532
3634
3736
3839
3941
4043
4145
4247
4349
4451
4553
4638
4740
4842
4944
5046
5148
5250
5352
5454
5556
5655
5757
5859
5961
6063
6165
6267
6369
6471
6573
6675
6758
6860
6962
7064
7166
7268
7370

[1,2,4,3,5,7,9,6,8,10,11,13,15,17,19,12,14,16,18,
 20,22,24,21,23,25,27,29,31,33,35,37,26,28,30,32,
 34,36,39,41,43,45,47,49,51,53,38,40,42,44,46,48,
 50,52,54,56,55,57,59,61,63,65,67,69,71,73,75,58,
 60,62,64,66,68,70]