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A253718 as a simple table

na(n)
00
11
21
33
44
54
63
74
84
95
106
116
126
137
147
156
167
177
185
196
206
216
227
237
246
257
267
277
288
298
308
319
329
338
349
359
368
379
389
399
4010
4110
429
4310
4410
458
469
479
489
4910
5010
519
5210
5310
547
558
568
578
589
599
608
619
629
638
649
659
669
6710
6810
699
7010
7110
728
739
749
759
7610
7710
789
7910
8010

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