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A061583 as a simple table

n a(n)
1 1
2 5
3 25
4 1025
5 501025
6 250501025
7 10250250501025
8 501025010250250501025
9 2505010250501025010250250501025
10 1025025050102502505010250501025010250250501025

[1,5,25,1025,501025,250501025,10250250501025,
 501025010250250501025,
 2505010250501025010250250501025,
 1025025050102502505010250501025010250250501025]

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Last modified July 29 22:13 EDT 2021. Contains 346346 sequences. (Running on oeis4.)