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A009805 as a simple table

n a(n)
0 1
1 -124
2 262096
3 -2681078464
4 83993259325696
5 -6291889632188161024
6 963296773204704677810176
7 -270352239123704851078462357504
8 128399592149905444543967414059073536 

[1,-124,262096,-2681078464,83993259325696,
 -6291889632188161024,963296773204704677810176,
 -270352239123704851078462357504,
 128399592149905444543967414059073536]

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Last modified July 25 12:21 EDT 2024. Contains 374588 sequences. (Running on oeis4.)