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A032521 as a simple table

na(n)
00
11
22
33
44
55
66
77
88
99
1010
1111
1212
1313
1414
1515
1616
1717
1818
1919
2020
2121
2222
2323
2424
2525
2627
2729
2831
2933
3035
3137
3239
3341
3443
3545
3647
3749
3851
3953
4055
4157
4259
4361
4463
4565
4667
4769
4871
4973
5075
5177
5279
5381
5483
5585
5687
5789
5891
5993
6095
6197
6299
63101
64103
65105
66107
67109
68111

[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,
 19,20,21,22,23,24,25,27,29,31,33,35,37,39,41,43,
 45,47,49,51,53,55,57,59,61,63,65,67,69,71,73,75,
 77,79,81,83,85,87,89,91,93,95,97,99,101,103,105,
 107,109,111]