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A060458 as a simple table

na(n)
18
296
3992
49984
599968
6999936
79999872
899999744
9999999488
109999998976
1199999997952
12999999995904
139999999991808
1499999999983616
15999999999967232
169999999999934464
1799999999999868928
18999999999999737856

[8,96,992,9984,99968,999936,9999872,99999744,
 999999488,9999998976,99999997952,999999995904,
 9999999991808,99999999983616,999999999967232,
 9999999999934464,99999999999868928,
 999999999999737856]