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A074946 as a simple table

na(n)
12
23
34
45
56
67
710
811
912
1013
1114
1216
1317
1418
1519
1622
1723
1824
1926
2027
2129
2230
2331
2434
2536
2637
2738
2840
2941
3042
3143
3245
3346
3447
3553
3656
3758
3859
3960
4061
4162
4263
4366
4467
4571
4673
4774
4875
4978
5079
5180
5282
5383
5484
5586
5688
5789
5894
5996
6097
6199
62100
63101
64102
65103
66104
67105
68106

[2,3,4,5,6,7,10,11,12,13,14,16,17,18,19,22,23,24,
 26,27,29,30,31,34,36,37,38,40,41,42,43,45,46,47,
 53,56,58,59,60,61,62,63,66,67,71,73,74,75,78,79,
 80,82,83,84,86,88,89,94,96,97,99,100,101,102,103,
 104,105,106]