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A248340 as a simple table

na(n)
00
15
275
3875
49375
596875
6984375
79921875
899609375
9998046875
109990234375
1199951171875
12999755859375
139998779296875
1499993896484375
15999969482421875
169999847412109375
1799999237060546875
18999996185302734375
199999980926513671875

[0,5,75,875,9375,96875,984375,9921875,99609375,
 998046875,9990234375,99951171875,999755859375,
 9998779296875,99993896484375,999969482421875,
 9999847412109375,99999237060546875,
 999996185302734375,9999980926513671875]