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A227568 as a simple table

na(n)
00
11
21
32
42
52
62
73
83
93
103
113
124
134
144
154
164
174
184
195
205
215
225
235
245
255
265
276
286
296
306
316
326
336
346
356
366
377
387
397
407
417
427
437
447
457
467
477
488
498
508
518
528
538
548
558
568
578
588
598
608
619
629
639
649
659
669
679
689
699
709
719
729
739
749
7510
7610
7710
7810
7910
8010
8110
8210
8310

[0,1,1,2,2,2,2,3,3,3,3,3,4,4,4,4,4,4,4,5,5,5,5,5,
 5,5,5,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,8,
 8,8,8,8,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,9,9,9,9,9,
 9,10,10,10,10,10,10,10,10,10]