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A080684 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
1111
1212
1313
1414
1515
1616
1716
1817
1917
2018
2119
2220
2320
2421
2522
2623
2724
2825
2925
3026
3126
3227
3328
3428
3529
3630
3730
3830
3931
4032
4132
4233
4333
4434
4535
4635
4735
4836
4937
5038
5138
5239
5339
5440
5541
5642
5742
5842
5942
6043
6143
6243
6344
6445
6546
6647
6747
6847
6947
7048
7148
7249

[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,16,17,17,
 18,19,20,20,21,22,23,24,25,25,26,26,27,28,28,29,
 30,30,30,31,32,32,33,33,34,35,35,35,36,37,38,38,
 39,39,40,41,42,42,42,42,43,43,43,44,45,46,47,47,
 47,47,48,48,49]