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A091413 as a simple table

na(n)
00
11
22
34
45
56
68
710
812
915
1016
1117
1219
1320
1421
1523
1625
1727
1830
1932
2033
2134
2236
2337
2438
2540
2642
2744
2847
2948
3049
3151
3252
3353
3455
3557
3659
3762
3864
3966
4068
4171
4273
4375
4477
4580
4683
4785
4886
4987
5089
5190
5291
5393
5495
5597
56100
57101
58102
59104
60105
61106
62108
63110
64112
65115
66117
67118
68119
69121

[0,1,2,4,5,6,8,10,12,15,16,17,19,20,21,23,25,27,
 30,32,33,34,36,37,38,40,42,44,47,48,49,51,52,53,
 55,57,59,62,64,66,68,71,73,75,77,80,83,85,86,87,
 89,90,91,93,95,97,100,101,102,104,105,106,108,110,
 112,115,117,118,119,121]