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A107897 as a simple table

na(n)
11
22
34
43
55
66
78
87
99
1010
1111
1212
1315
1413
1517
1614
1716
1818
1919
2020
2121
2223
2322
2424
2525
2628
2726
2832
2927
3033
3129
3230
3334
3436
3535
3631
3738
3837
3939
4046
4140
4241
4344
4442
4545
4647
4751
4849
4943
5053
5150
5258
5352
5456
5555
5662
5748
5861
5967
6054
6160
6257
6370
6464
6559
6665
6766
6869
6963
7071
7174
7283

[1,2,4,3,5,6,8,7,9,10,11,12,15,13,17,14,16,18,19,
 20,21,23,22,24,25,28,26,32,27,33,29,30,34,36,35,
 31,38,37,39,46,40,41,44,42,45,47,51,49,43,53,50,
 58,52,56,55,62,48,61,67,54,60,57,70,64,59,65,66,
 69,63,71,74,83]