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A068226 as a simple table

na(n)
16
21
34
45
518
619
720
87
98
109
112
123
1314
1415
1516
1617
1738
1839
1940
2041
2142
2221
2322
2423
2524
2625
2710
2811
2912
3013
3132
3233
3334
3435
3536
3637
3766
3867
3968
4069
4170
4271
4372
4443
4544
4645
4746
4847
4948
5049
5126
5227
5328
5429
5530
5631
5758
5859
5960
6061
6162
6263
6364
6465
65102
66103
67104
68105
69106
70107

[6,1,4,5,18,19,20,7,8,9,2,3,14,15,16,17,38,39,40,
 41,42,21,22,23,24,25,10,11,12,13,32,33,34,35,36,
 37,66,67,68,69,70,71,72,43,44,45,46,47,48,49,26,
 27,28,29,30,31,58,59,60,61,62,63,64,65,102,103,
 104,105,106,107]