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A081600 as a simple table

na(n)
00
11
22
33
44
55
66
77
88
99
109
1110
1211
1312
1413
1514
1615
1716
1817
1918
2018
2119
2220
2321
2422
2523
2624
2725
2826
2927
3027
3128
3229
3330
3431
3532
3633
3734
3835
3936
4036
4137
4238
4339
4440
4541
4642
4743
4844
4945
5045
5146
5247
5348
5449
5550
5651
5752
5853
5954
6054
6155
6256
6357
6458
6559
6660
6761
6862
6963
7063
7164
7265
7366
7467
7568
7669
7770
7871
7972
8072
8173
8274
8375
8476
8577
8678
8779
8880
8981
9081
9182
9283
9384
9485
9586
9687
9788
9889
9990
10090
10191
10292
10393
10494
10595
10696
10797
10898
10999
11099
111100
112101
113102
114103
115104
116105
117106
118107
119108
120108
121109
122110

[0,1,2,3,4,5,6,7,8,9,9,10,11,12,13,14,15,16,17,18,
 18,19,20,21,22,23,24,25,26,27,27,28,29,30,31,32,
 33,34,35,36,36,37,38,39,40,41,42,43,44,45,45,46,
 47,48,49,50,51,52,53,54,54,55,56,57,58,59,60,61,
 62,63,63,64,65,66,67,68,69,70,71,72,72,73,74,75,
 76,77,78,79,80,81,81,82,83,84,85,86,87,88,89,90,
 90,91,92,93,94,95,96,97,98,99,99,100,101,102,103,
 104,105,106,107,108,108,109,110]