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A012684 formatted as a simple table:

n a(n)
0 2
1 -16
2 80
3 14464
4 -1924352
5 182456320
6 -4821633024
7 -5022496751616
8 2274499602284544
9 -641508042469015552
10 58440162971714846720
11 91048038738283980652544
12 -93320295604487977397387264

[2,-16,80,14464,-1924352,182456320,-4821633024,
 -5022496751616,2274499602284544,
 -641508042469015552,58440162971714846720,
 91048038738283980652544,
 -93320295604487977397387264]

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Last modified December 1 19:22 EST 2009. Contains 167811 sequences.


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