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A093515 as a simple table

na(n)
12
23
34
45
56
67
78
811
912
1013
1114
1217
1318
1419
1520
1623
1724
1829
1930
2031
2132
2237
2338
2441
2542
2643
2744
2847
2948
3053
3154
3259
3360
3461
3562
3667
3768
3871
3972
4073
4174
4279
4380
4483
4584
4689
4790
4897
4998
50101
51102
52103
53104
54107
55108
56109
57110
58113
59114
60127
61128
62131
63132
64137
65138
66139

[2,3,4,5,6,7,8,11,12,13,14,17,18,19,20,23,24,29,
 30,31,32,37,38,41,42,43,44,47,48,53,54,59,60,61,
 62,67,68,71,72,73,74,79,80,83,84,89,90,97,98,101,
 102,103,104,107,108,109,110,113,114,127,128,131,
 132,137,138,139]