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A012790 as a simple table

n a(n)
0 1
1 2
2 -20
3 -1104
4 -23728
5 2048224
6 394518592
7 28921612032
8 -3968669081344
9 -2038929577444864
10 -347998546570798080
11 59058720637105172480
12 67936182152875665510400
13 22515279368057454566531072

[1,2,-20,-1104,-23728,2048224,394518592,
 28921612032,-3968669081344,-2038929577444864,
 -347998546570798080,59058720637105172480,
 67936182152875665510400,
 22515279368057454566531072]

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Last modified July 2 18:27 EDT 2022. Contains 355029 sequences. (Running on oeis4.)