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A209037 as a simple table

na(n)
01
11
22
33
45
57
64
74
87
94
105
116
125
135
147
155
166
177
186
196
208
216
227
238
247
257
269
277
288
299
308
318
3210
338
349
3510
369
379
3811
399
4010
4111
4210
4310
4412
4510
4611
4712
4811
4911
5013
5111
5212
5313
5412
5512
5614
5712
5813
5914
6013
6113
6215
6313
6414
6515
6614
6714
6816
6914
7015
7116
7215
7315

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