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A175834 as a simple table

na(n)
00
11
22
31
42
51
62
71
82
91
102
111
122
131
142
153
162
173
182
193
204
213
222
231
242
251
262
271
282
291
302
311
322
331
342
351
362
371
382
393
402
413
422

[0,1,2,1,2,1,2,1,2,1,2,1,2,1,2,3,2,3,2,3,4,3,2,1,
 2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,3,2,3,2]