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A243291 as a simple table

na(n)
11
21
31
43
52
64
73
87
97
107
116
1210
137
1410
1512
1615
1710
1816
1911
2017
2117
2217
2314
2422
2522
2620
2725
2824
2919
3027
3120
3231
3328
3427
3531
3634
3725
3830
3933
4037
4128
4238
4329
4439
4542
4637
4732
4846
4945
5047
5144
5246
5337
5452
5550
5652
5749
5848
5942
6057
6143
6251
6359
6463
6559
6661
6748
6861
6960

[1,1,1,3,2,4,3,7,7,7,6,10,7,10,12,15,10,16,11,17,
 17,17,14,22,22,20,25,24,19,27,20,31,28,27,31,34,
 25,30,33,37,28,38,29,39,42,37,32,46,45,47,44,46,
 37,52,50,52,49,48,42,57,43,51,59,63,59,61,48,61,
 60]