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A221491 as a simple table

na(n)
10
21
32
42
52
62
75
82
93
103
115
123
136
144
157
166
175
184
199
202
218
227
238
244
2511
265
2710
288
2910
304
3116
323
3310
3410
3512
369
3715
384
3910
4011
4113
426
4320
447
4511
4610
4715
488
4919
506
5119
5213
5316
545
5525
5610
5719
5810
5915
609
6126
627
6316
6413
6516
6613
6730
689
6918
7014
7126
7210
7325
7410

[0,1,2,2,2,2,5,2,3,3,5,3,6,4,7,6,5,4,9,2,8,7,8,4,
 11,5,10,8,10,4,16,3,10,10,12,9,15,4,10,11,13,6,20,
 7,11,10,15,8,19,6,19,13,16,5,25,10,19,10,15,9,26,
 7,16,13,16,13,30,9,18,14,26,10,25,10]