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A049840 as a simple table

na(n)
11
22
32
43
55
63
74
84
97
104
115
127
1310
149
155
166
176
186
1910
2011
216
227
239
2410
2514
2614
2713
287
298
308
3113
328
3318
3414
3515
368
379
3811
399
4013
4118
4215
4318
4417
459
4610
4710
4813
4914
5010
5120
5220
5318
5419
5510
5611
5713
5816
5918
6016
6122
6225
6324
6422
6521
6611
6712
6812
6912
7012
7119
7212
7326
7420
7521
7622
7723
7812

[1,2,2,3,5,3,4,4,7,4,5,7,10,9,5,6,6,6,10,11,6,7,9,
 10,14,14,13,7,8,8,13,8,18,14,15,8,9,11,9,13,18,15,
 18,17,9,10,10,13,14,10,20,20,18,19,10,11,13,16,18,
 16,22,25,24,22,21,11,12,12,12,12,19,12,26,20,21,
 22,23,12]