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A056451 as a simple table

na(n)
01
15
25
325
425
5125
6125
7625
8625
93125
103125
1115625
1215625
1378125
1478125
15390625
16390625
171953125
181953125
199765625
209765625
2148828125
2248828125
23244140625
24244140625
251220703125
261220703125
276103515625
286103515625
2930517578125
3030517578125
31152587890625
32152587890625

[1,5,5,25,25,125,125,625,625,3125,3125,15625,
 15625,78125,78125,390625,390625,1953125,1953125,
 9765625,9765625,48828125,48828125,244140625,
 244140625,1220703125,1220703125,6103515625,
 6103515625,30517578125,30517578125,152587890625,
 152587890625]