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A225548 as a simple table

na(n)
12
29
312
480
5625
61792
72025
8321489
9720896
105764801
11937890625
125208653241
1355834574848
142234039306640625
1545949729863572161
16313160411915961129
17313594649253062377472
187123773809250362976481
19664987601339817047119140625
20992334624064536108066118386802209

[2,9,12,80,625,1792,2025,321489,720896,5764801,
 937890625,5208653241,55834574848,2234039306640625,
 45949729863572161,313160411915961129,
 313594649253062377472,7123773809250362976481,
 664987601339817047119140625,
 992334624064536108066118386802209]