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A047240 as a simple table

na(n)
10
21
32
46
57
68
712
813
914
1018
1119
1220
1324
1425
1526
1630
1731
1832
1936
2037
2138
2242
2343
2444
2548
2649
2750
2854
2955
3056
3160
3261
3362
3466
3567
3668
3772
3873
3974
4078
4179
4280
4384
4485
4586
4690
4791
4892
4996
5097
5198
52102
53103
54104
55108
56109
57110
58114
59115
60116
61120
62121
63122

[0,1,2,6,7,8,12,13,14,18,19,20,24,25,26,30,31,32,
 36,37,38,42,43,44,48,49,50,54,55,56,60,61,62,66,
 67,68,72,73,74,78,79,80,84,85,86,90,91,92,96,97,
 98,102,103,104,108,109,110,114,115,116,120,121,
 122]