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A280791 as a simple table

n a(n)
1 1
2 4
3 400
4 5364800
5 -367374176000
6 143449000888960000
7 -181899009894595069440000
8 627436681283593072503040000000
9 -5107564746905573153364013194240000000
10 88171417366157389105207649269976371200000000
11 -2969272543655823399308577388625291953035264000000000
12 182441297602875422577046590572630481727347923066880000000000 

[1,4,400,5364800,-367374176000,143449000888960000,
 -181899009894595069440000,
 627436681283593072503040000000,
 -5107564746905573153364013194240000000,
 88171417366157389105207649269976371200000000,
 -2969272543655823399308577388625291953035264000000\
 000,
 18244129760287542257704659057263048172734792306688\
 0000000000]

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Last modified June 4 07:50 EDT 2024. Contains 373092 sequences. (Running on oeis4.)