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A107743 as a simple table

na(n)
12
23
34
45
56
67
78
89
912
1015
1117
1218
1320
1421
1522
1623
1724
1825
1926
2027
2128
2229
2330
2431
2533
2636
2738
2839
2940
3041
3142
3243
3344
3445
3546
3647
3748
3849
3950
4051
4154
4255
4357
4460
4561
4662
4763
4864
4965
5066
5167
5268
5369
5470
5572
5674
5775
5877
5978
6079
6180
6281
6382
6483
6584
6685
6786
6887
6988
7089
7190
7293

[2,3,4,5,6,7,8,9,12,15,17,18,20,21,22,23,24,25,26,
 27,28,29,30,31,33,36,38,39,40,41,42,43,44,45,46,
 47,48,49,50,51,54,55,57,60,61,62,63,64,65,66,67,
 68,69,70,72,74,75,77,78,79,80,81,82,83,84,85,86,
 87,88,89,90,93]