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A317420 as a simple table

na(n)
10
21
31
42
53
62
72
83
92
105
115
125
139
146
156
165
172
184
193
203
218
228
238
248
255
268
277
289
296
305
314
326
335
345
357
3611
378
387
398
407
4113
4210
4315
4416
4516
4618
4714
489
4915
5015
5111
5214
5311
5412
5513
5614
5712
5817
5916
6018
6118
6214
6316
6415
6518
6614
6717
6814
6916
7017
7115
7217
7318
7417
7518

[0,1,1,2,3,2,2,3,2,5,5,5,9,6,6,5,2,4,3,3,8,8,8,8,
 5,8,7,9,6,5,4,6,5,5,7,11,8,7,8,7,13,10,15,16,16,
 18,14,9,15,15,11,14,11,12,13,14,12,17,16,18,18,14,
 16,15,18,14,17,14,16,17,15,17,18,17,18]