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A216093 as a simple table

na(n)
15
275
3375
49375
59375
6109375
77109375
887109375
9787109375
101787109375
1181787109375
1281787109375
1381787109375
1440081787109375
15740081787109375
163740081787109375
1743740081787109375
18743740081787109375

[5,75,375,9375,9375,109375,7109375,87109375,
 787109375,1787109375,81787109375,81787109375,
 81787109375,40081787109375,740081787109375,
 3740081787109375,43740081787109375,
 743740081787109375]