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A069345 as a simple table

na(n)
11
21
32
42
54
64
76
85
97
108
1110
129
1312
1412
1513
1612
1716
1815
1918
2017
2119
2220
2322
2420
2523
2624
2724
2825
2928
3027
3130
3227
3331
3432
3533
3632
3736
3836
3937
4036
4140
4239
4342
4441
4542
4644
4746
4843
4947
5047
5149
5249
5352
5450
5553
5652
5755
5856
5958
6056
6160
6260
6360
6458

[1,1,2,2,4,4,6,5,7,8,10,9,12,12,13,12,16,15,18,17,
 19,20,22,20,23,24,24,25,28,27,30,27,31,32,33,32,
 36,36,37,36,40,39,42,41,42,44,46,43,47,47,49,49,
 52,50,53,52,55,56,58,56,60,60,60,58]