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A181988 as a simple table

na(n)
11
22
32
43
53
64
74
84
95
106
116
126
137
148
158
165
179
1810
1910
209
2111
2212
2312
248
2513
2614
2714
2812
2915
3016
3116
326
3317
3418
3518
3615
3719
3820
3920
4012
4121
4222
4322
4418
4523
4624
4724
4810
4925
5026
5126
5221
5327
5428
5528
5616
5729
5830
5930
6024
6131
6232
6332
647
6533
6634
6734
6827
6935
7036

[1,2,2,3,3,4,4,4,5,6,6,6,7,8,8,5,9,10,10,9,11,12,
 12,8,13,14,14,12,15,16,16,6,17,18,18,15,19,20,20,
 12,21,22,22,18,23,24,24,10,25,26,26,21,27,28,28,
 16,29,30,30,24,31,32,32,7,33,34,34,27,35,36]