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A280315 as a simple table

na(n)
11
21
32
43
53
64
75
84
95
106
115
127
135
147
158
167
179
186
197
208
219
2210
237
2411
257
268
279
2810
2911
3012
319
3211
3313
348
3511
3613
3714
389
3911
4013
4115
429
4310
4411
4512
4613
4714
4815
4916
5011
5113
5217
5310
5411
5512
5613
5714
5815
5916
6017
6118
6211
6313
6417
6519
6611
6713
6816
6917
7019
7120
7213
7315
7417
7519
7621
7712
7813
7914
8015
8116
8217

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