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A013555 as a simple table

n a(n)
0 -2
1 8
2 -52
3 112
4 -51412
5 3469712
6 -2491688
7 62534458528
8 -22811578796
9 1052637839125232
10 -1951793355443020696
11 1800318713817966304
12 -132444323199647003032
13 130585857053193268706729632
14 -9112129339306147838595664

[-2,8,-52,112,-51412,3469712,-2491688,62534458528,
 -22811578796,1052637839125232,
 -1951793355443020696,1800318713817966304,
 -132444323199647003032,
 130585857053193268706729632,
 -9112129339306147838595664]

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Last modified September 19 12:43 EDT 2020. Contains 337178 sequences. (Running on oeis4.)