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A012098 as a simple table

n a(n)
0 1
1 -1
2 9
3 -249
4 13297
5 -1175761
6 154625721
7 -28328562313
8 6890453792609
9 -2147692998841633
10 834418870682339561
11 -395288520944694504345
12 224249503561141591847505
13 -150078278389547160573482225

[1,-1,9,-249,13297,-1175761,154625721,
 -28328562313,6890453792609,-2147692998841633,
 834418870682339561,-395288520944694504345,
 224249503561141591847505,
 -150078278389547160573482225]

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Last modified August 11 11:29 EDT 2022. Contains 356065 sequences. (Running on oeis4.)