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A068450 as a simple table

na(n)
11
21
31
42
52
64
71
81
93
100
115
1210
136
148
1512
160
1710
180
1912
209
216
2212
2322
2421
2524
263
2714
2821
2913
3024
3121
3211
338
3422
3527
363
378
381
3936
4021
4127
4215
432
4441
4522
4634
478
480
494
508
5139
5248
5327
5438
5522
560
5723
5849
5919
6027
6129
6228
6340
6433
6521
6662
677
6867
6933
708
7130
7218
7360
7473
7561
7672
7742
7859
7922

[1,1,1,2,2,4,1,1,3,0,5,10,6,8,12,0,10,0,12,9,6,12,
 22,21,24,3,14,21,13,24,21,11,8,22,27,3,8,1,36,21,
 27,15,2,41,22,34,8,0,4,8,39,48,27,38,22,0,23,49,
 19,27,29,28,40,33,21,62,7,67,33,8,30,18,60,73,61,
 72,42,59,22]