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A039112 as a simple table

na(n)
12
23
34
45
56
67
78
89
910
1022
1123
1224
1325
1426
1527
1628
1729
1832
1933
2034
2135
2236
2337
2438
2539
2642
2743
2844
2945
3046
3147
3248
3349
3452
3553
3654
3755
3856
3957
4058
4159
4262
4363
4464
4565
4666
4767
4868
4969
5072
5173
5274
5375
5476
5577
5678
5779
5882
5983
6084
6185
6286
6387
6488
6589
6692
6793
6894
6995
7096

[2,3,4,5,6,7,8,9,10,22,23,24,25,26,27,28,29,32,33,
 34,35,36,37,38,39,42,43,44,45,46,47,48,49,52,53,
 54,55,56,57,58,59,62,63,64,65,66,67,68,69,72,73,
 74,75,76,77,78,79,82,83,84,85,86,87,88,89,92,93,
 94,95,96]