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A221108 as a simple table

na(n)
11
21
32
43
54
63
74
84
96
104
114
128
137
147
155
166
1710
1811
1910
2010
216
227
2312
2414
2514
2613
2712
287
297
3012
3117
3218
3319
3416
3513
368
379
3816
3919
4023
4124
4224
4319
4416
459
4610
4718
4824
4928
5028
5130
5228
5322
5418
5510
5610
5720
5827
5932
6032
6134
6235
6331
6425
6519
6611
6712
6820
6930
7032
7140
7240
7342
7440
7534
7628
7722
7812
7913

[1,1,2,3,4,3,4,4,6,4,4,8,7,7,5,6,10,11,10,10,6,7,
 12,14,14,13,12,7,7,12,17,18,19,16,13,8,9,16,19,23,
 24,24,19,16,9,10,18,24,28,28,30,28,22,18,10,10,20,
 27,32,32,34,35,31,25,19,11,12,20,30,32,40,40,42,
 40,34,28,22,12,13]