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A064175 as a simple table

na(n)
12
23
34
45
57
69
711
813
916
1017
1119
1223
1324
1425
1529
1630
1731
1837
1940
2041
2142
2243
2347
2449
2553
2654
2756
2859
2960
3061
3166
3267
3370
3471
3572
3673
3778
3879
3981
4083
4184
4288
4389
4490
4596
4697
47101
48102
49103
50104
51105
52107
53108
54109
55110
56113
57114
58121
59126
60127
61128
62130
63131
64132

[2,3,4,5,7,9,11,13,16,17,19,23,24,25,29,30,31,37,
 40,41,42,43,47,49,53,54,56,59,60,61,66,67,70,71,
 72,73,78,79,81,83,84,88,89,90,96,97,101,102,103,
 104,105,107,108,109,110,113,114,121,126,127,128,
 130,131,132]