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A047300 as a simple table

na(n)
12
23
34
46
59
610
711
813
916
1017
1118
1220
1323
1424
1525
1627
1730
1831
1932
2034
2137
2238
2339
2441
2544
2645
2746
2848
2951
3052
3153
3255
3358
3459
3560
3662
3765
3866
3967
4069
4172
4273
4374
4476
4579
4680
4781
4883
4986
5087
5188
5290
5393
5494
5595
5697
57100
58101
59102
60104
61107
62108
63109
64111

[2,3,4,6,9,10,11,13,16,17,18,20,23,24,25,27,30,31,
 32,34,37,38,39,41,44,45,46,48,51,52,53,55,58,59,
 60,62,65,66,67,69,72,73,74,76,79,80,81,83,86,87,
 88,90,93,94,95,97,100,101,102,104,107,108,109,111]