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A064515 as a simple table

na(n)
10
21
31
42
52
62
73
83
93
104
113
124
134
145
154
165
174
185
196
205
216
225
236
245
257
266
277
286
297
306
318
327
336
348
357
368
377
389
398
407
419
428
437
449
458
4610
479
488
4910
509
518
5210
539
5411
558
5610
579
5811
5910
609
6111
6210
6312
649
6511
6610
6712
689
6911
7010
7112
7211
7313
7410
7512
7611
7713
7810
7912
8011
8113
8210
8312
8414
8511
8613
8712

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