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A013175 as a simple table

n a(n)
0 2
1 -8
2 80
3 -4160
4 177920
5 -25548800
6 2560563200
7 -702660608000
8 129295622144000
9 -57197188186112000
10 16886573106790400000
11 -10912577096233779200000
12 4743735379760119808000000

[2,-8,80,-4160,177920,-25548800,2560563200,
 -702660608000,129295622144000,-57197188186112000,
 16886573106790400000,-10912577096233779200000,
 4743735379760119808000000]

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Last modified July 2 21:48 EDT 2022. Contains 355029 sequences. (Running on oeis4.)