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A012002 as a simple table

n a(n)
0 0
1 -1
2 -2
3 14
4 568
5 2144
6 -1061312
7 -65851696
8 3745115008
9 1232648783744
10 50799435228928
11 -36670923310299136
12 -8828746813705828352
13 954888000296009790464
14 1122466427244127979911168

[0,-1,-2,14,568,2144,-1061312,-65851696,
 3745115008,1232648783744,50799435228928,
 -36670923310299136,-8828746813705828352,
 954888000296009790464,1122466427244127979911168]

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Last modified March 25 12:50 EDT 2019. Contains 321470 sequences. (Running on oeis4.)