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A261423 as a simple table

na(n)
00
11
22
33
44
55
66
77
88
99
109
1111
1211
1311
1411
1511
1611
1711
1811
1911
2011
2111
2222
2322
2422
2522
2622
2722
2822
2922
3022
3122
3222
3333
3433
3533
3633
3733
3833
3933
4033
4133
4233
4333
4444
4544
4644
4744
4844
4944
5044
5144
5244
5344
5444
5555
5655
5755
5855
5955
6055
6155
6255
6355
6455
6555
6666
6766
6866
6966
7066
7166
7266
7366
7466
7566
7666
7777
7877

[0,1,2,3,4,5,6,7,8,9,9,11,11,11,11,11,11,11,11,11,
 11,11,22,22,22,22,22,22,22,22,22,22,22,33,33,33,
 33,33,33,33,33,33,33,33,44,44,44,44,44,44,44,44,
 44,44,44,55,55,55,55,55,55,55,55,55,55,55,66,66,
 66,66,66,66,66,66,66,66,66,77,77]