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A098168 as a simple table

na(n)
12
23
34
46
59
67
78
89
912
1018
1119
1218
1320
1415
1528
1617
1718
1829
1924
2027
2122
2236
2345
2426
2527
2651
2748
2831
2948
3043
3138
3250
33117
3452
3537
3639
3785
3852
3946
4043
4146
4276
4351
44133
4565
46137
47111
4865
4976
5062
5186
5267
5361
5459
5558
5679
5763
5867
5975
6094
6167
6264
6378
6467
6571
6681
6782
68153
69101
70221

[2,3,4,6,9,7,8,9,12,18,19,18,20,15,28,17,18,29,24,
 27,22,36,45,26,27,51,48,31,48,43,38,50,117,52,37,
 39,85,52,46,43,46,76,51,133,65,137,111,65,76,62,
 86,67,61,59,58,79,63,67,75,94,67,64,78,67,71,81,
 82,153,101,221]