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A093129 as a simple table

na(n)
01
12
25
315
450
5175
6625
72250
88125
929375
10106250
11384375
121390625
135031250
1418203125
1565859375
16238281250
17862109375
183119140625
1911285156250
2040830078125
21147724609375
22534472656250
231933740234375
246996337890625

[1,2,5,15,50,175,625,2250,8125,29375,106250,
 384375,1390625,5031250,18203125,65859375,
 238281250,862109375,3119140625,11285156250,
 40830078125,147724609375,534472656250,
 1933740234375,6996337890625]