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A247892 as a simple table

na(n)
11
21
32
41
53
61
74
83
94
103
117
123
138
145
158
166
1711
184
1912
207
2111
229
2315
246
2515
2612
2716
2812
2920
304
3121
3215
3319
3416
3522
3610
3726
3818
3923
4017
4129
4211
4330
4422
4524
4624
4733
4816
4934
5022
5131
5225
5338
5419
5536
5627
5735
5830
5943
6015
6144
6233
6336
6434
6544
6622
6749
6836
6943
7027

[1,1,2,1,3,1,4,3,4,3,7,3,8,5,8,6,11,4,12,7,11,9,
 15,6,15,12,16,12,20,4,21,15,19,16,22,10,26,18,23,
 17,29,11,30,22,24,24,33,16,34,22,31,25,38,19,36,
 27,35,30,43,15,44,33,36,34,44,22,49,36,43,27]