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A234923 as a simple table

na(n)
11
22
33
45
54
67
75
89
98
106
1111
1210
1314
147
1513
1612
1711
1817
198
2015
2114
2213
2320
2419
259
2617
2716
2815
2923
3014
3122
3220
3310
3419
3518
3617
3726
3816
3925
4024
4123
4230
4311
4421
4520
4619
4729
4818
4928
5017
5127
5226
5325
5434
5512
5623
5722
5821
5932
6020
6131
6219
6330
6429
6529
6628
6738
6826

[1,2,3,5,4,7,5,9,8,6,11,10,14,7,13,12,11,17,8,15,
 14,13,20,19,9,17,16,15,23,14,22,20,10,19,18,17,26,
 16,25,24,23,30,11,21,20,19,29,18,28,17,27,26,25,
 34,12,23,22,21,32,20,31,19,30,29,29,28,38,26]