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A012221 as a simple table

n a(n)
0 1
1 -1
2 17
3 -769
4 66401
5 -9313281
6 1927198833
7 -551835917697
8 208856369686977
9 -100945109069282817
10 60655475821737151953
11 -44346899335054478649345
12 38762487400695339770533665

[1,-1,17,-769,66401,-9313281,1927198833,
 -551835917697,208856369686977,-100945109069282817,
 60655475821737151953,-44346899335054478649345,
 38762487400695339770533665]

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Last modified April 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)