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A122484
as a simple table
n
a(n)
1
1
2
7
3
19
4
67
5
124499
6
594959999
7
1349969999
8
57999659949
9
84936699999
10
498998999999
[1,7,19,67,124499,594959999,1349969999, 57999659949,84936699999,498998999999]