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A321288 as a simple table

na(n)
15
225
3125
48125
578125
678125
75078125
85078125
9705078125
102705078125
1172705078125
12272705078125
133272705078125
1423272705078125
15323272705078125
164323272705078125
1774323272705078125
18474323272705078125
191474323272705078125
2061474323272705078125
21561474323272705078125

[5,25,125,8125,78125,78125,5078125,5078125,
 705078125,2705078125,72705078125,272705078125,
 3272705078125,23272705078125,323272705078125,
 4323272705078125,74323272705078125,
 474323272705078125,1474323272705078125,
 61474323272705078125,561474323272705078125]