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A172471 as a simple table

na(n)
00
11
22
32
42
53
63
73
84
94
104
114
124
135
145
155
165
175
186
196
206
216
226
236
246
257
267
277
287
297
307
317
328
338
348
358
368
378
388
398
408
419
429
439
449
459
469
479
489
499
5010
5110
5210
5310
5410
5510
5610
5710
5810
5910
6010
6111
6211
6311
6411
6511
6611
6711
6811
6911
7011
7111
7212
7312
7412

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