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A087416 as a simple table

na(n)
19
29
39
49
59
69
79
89
99
1099
1199
1219
1319
1419
1519
1619
1719
1819
1919
2099
2199
2299
2329
2429
2529
2629
2729
2829
2929
3099
3199
3299
3399
3439
3539
3639
3739
3839
3939
4099
4199
4299
4399
4499
4549
4649
4749
4849
4949
5099
5199
5299
5399
5499
5599
5659
5759
5859
5959
6099
6199
6299
6399
6499
6599
6699
6769
6869
6969

[9,9,9,9,9,9,9,9,9,99,99,19,19,19,19,19,19,19,19,
 99,99,99,29,29,29,29,29,29,29,99,99,99,99,39,39,
 39,39,39,39,99,99,99,99,99,49,49,49,49,49,99,99,
 99,99,99,99,59,59,59,59,99,99,99,99,99,99,99,69,
 69,69]