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A181847 as a simple table

na(n)
11
22
31
43
52
61
74
84
93
101
115
124
136
144
151
166
179
1811
1910
205
211
227
236
2415
2520
2615
276
281
298
3012
3124
3236
3335
3421
357
361
379
3812
3930
4056
4170
4256
4328
448
451
4610
4717
4842
4988
50127
51126
5284
5336
549
551

[1,2,1,3,2,1,4,4,3,1,5,4,6,4,1,6,9,11,10,5,1,7,6,
 15,20,15,6,1,8,12,24,36,35,21,7,1,9,12,30,56,70,
 56,28,8,1,10,17,42,88,127,126,84,36,9,1]