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A271433 as a simple table

n a(n)
1 0
2 0
3 12
4 864
5 41328
6 2009952
7 116220672
8 8608449792
9 850781715456
10 114969127987200
11 21579927922212864
12 5686939126548676608
13 2120212910213354962944

[0,0,12,864,41328,2009952,116220672,8608449792,
 850781715456,114969127987200,21579927922212864,
 5686939126548676608,2120212910213354962944]

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Last modified September 20 00:46 EDT 2020. Contains 337225 sequences. (Running on oeis4.)