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A012440 as a simple table

n a(n)
0 0
1 2
2 -4
3 398
4 -10344
5 2050362
6 -188329260
7 60987377670
8 -12776749381200
9 6138167322301170
10 -2341662552659308500
11 1574696831249089102590
12 -954442874464228447345080
13 862598218425468174866650410

[0,2,-4,398,-10344,2050362,-188329260,60987377670,
 -12776749381200,6138167322301170,
 -2341662552659308500,1574696831249089102590,
 -954442874464228447345080,
 862598218425468174866650410]

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Last modified April 23 08:11 EDT 2024. Contains 371905 sequences. (Running on oeis4.)