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A051252 as a simple table

n a(n)
1 1
2 1
3 1
4 2
5 48
6 512
7 1440
8 40512
9 385072
10 3154650
11 106906168
12 3197817022
13 82924866213
14 4025168862425
15 127854811616691 

[1,1,1,2,48,512,1440,40512,385072,3154650,
 106906168,3197817022,82924866213,4025168862425,
 127854811616691]

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Last modified April 23 08:29 EDT 2024. Contains 371905 sequences. (Running on oeis4.)