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A009682 as a simple table

n a(n)
0 0
1 2
2 8
3 168
4 6208
5 365984
6 31759232
7 3799039104
8 599327352832
9 120551382086144
10 30112348370954240
11 9144842254707320832
12 3318219571077818269696
13 1417778434388262802202624 

[0,2,8,168,6208,365984,31759232,3799039104,
 599327352832,120551382086144,30112348370954240,
 9144842254707320832,3318219571077818269696,
 1417778434388262802202624]

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Last modified April 19 11:31 EDT 2024. Contains 371792 sequences. (Running on oeis4.)