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A234459 as a simple table

n a(n)
1 1
2 -20
3 7800
4 530400000
5 2787453552000000
6 -7066368691421644800000000
7 3108366378804858902744832000000000000
8 1291087724942273632600239979303403520000000000000000 

[1,-20,7800,530400000,2787453552000000,
 -7066368691421644800000000,
 3108366378804858902744832000000000000,
 12910877249422736326002399793034035200000000000000\
 00]

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Last modified March 27 12:09 EDT 2023. Contains 361570 sequences. (Running on oeis4.)