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A081481 as a simple table

n a(n)
1 1
2 9
3 427
4 39001680
5 59326666963451131888009
6 104404652929682490885549887204525469920253354571296599271372511202005 

[1,9,427,39001680,59326666963451131888009,
 10440465292968249088554988720452546992025335457129\
 6599271372511202005]

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Last modified April 24 08:59 EDT 2024. Contains 371935 sequences. (Running on oeis4.)