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A376939 as a simple table

na(n)
10
20
31
41
51
61
71
82
91
101
112
123
133
143
154
164
175
185
195
207
216
227
237
247
257
268
278
288
299
309
319
3210
339
3410
3510
3610
3711
3811
3910
4011
4112
4212
4312
4413
4512
4613
4714
4814
4913
5014
5114
5214
5315
5415
5514
5615
5715
5815
5916
6016
6116
6217
6316
6417
6517
6617
6718
6818
6917
7018
7119
7219
7319
7420
7519
7620

[0,0,1,1,1,1,1,2,1,1,2,3,3,3,4,4,5,5,5,7,6,7,7,7,
 7,8,8,8,9,9,9,10,9,10,10,10,11,11,10,11,12,12,12,
 13,12,13,14,14,13,14,14,14,15,15,14,15,15,15,16,
 16,16,17,16,17,17,17,18,18,17,18,19,19,19,20,19,
 20]