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A198000 as a simple table

n a(n)
1 1
2 1
3 25
4 149
5 2838
6 341621
7 23074917
8 4770466713
9 3230855421145

[1,1,25,149,2838,341621,23074917,4770466713,
 3230855421145]

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Last modified January 29 04:47 EST 2023. Contains 359915 sequences. (Running on oeis4.)