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A039210 as a simple table

na(n)
12
23
34
45
56
67
78
89
910
1011
1112
1226
1327
1428
1529
1630
1731
1832
1933
2034
2135
2238
2339
2440
2541
2642
2743
2844
2945
3046
3147
3250
3351
3452
3553
3654
3755
3856
3957
4058
4159
4262
4363
4464
4565
4666
4767
4868
4969
5070
5171
5274
5375
5476
5577
5678
5779
5880
5981
6082
6183
6286
6387
6488
6589
6690
6791
6892
6993
7094

[2,3,4,5,6,7,8,9,10,11,12,26,27,28,29,30,31,32,33,
 34,35,38,39,40,41,42,43,44,45,46,47,50,51,52,53,
 54,55,56,57,58,59,62,63,64,65,66,67,68,69,70,71,
 74,75,76,77,78,79,80,81,82,83,86,87,88,89,90,91,
 92,93,94]