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A174894 as a simple table

na(n)
12
23
34
45
57
68
79
811
913
1015
1116
1217
1319
1421
1523
1625
1727
1829
1931
2032
2133
2235
2337
2439
2541
2642
2743
2847
2949
3051
3153
3255
3357
3459
3561
3664
3765
3867
3969
4071
4173
4277
4378
4479
4581
4683
4785
4887
4989
5091
5193
5295
5397
54101

[2,3,4,5,7,8,9,11,13,15,16,17,19,21,23,25,27,29,
 31,32,33,35,37,39,41,42,43,47,49,51,53,55,57,59,
 61,64,65,67,69,71,73,77,78,79,81,83,85,87,89,91,
 93,95,97,101]