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A198030 as a simple table

n a(n)
1 1
2 1
3 25
4 149
5 2616
6 297324
7 20029669
8 3450459535
9 2116727009559

[1,1,25,149,2616,297324,20029669,3450459535,
 2116727009559]

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Last modified February 6 11:14 EST 2023. Contains 360104 sequences. (Running on oeis4.)