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A098311 as a simple table

na(n)
11
22
33
45
54
67
76
88
99
1011
1110
1212
1313
1417
1515
1619
1714
1816
1918
2020
2121
2223
2325
2429
2522
2624
2726
2827
2928
3031
3130
3232
3333
3437
3535
3639
3741
3843
3947
4049
4134
4238
4336
4440
4542
4644
4745
4846
4951
5053
5155
5259
5357
5461
5550
5652
5765
5867
5948
6054
6171
6273
6363
6469
6556
6658
6760
6862
6964
7066
7168
7270

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