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A094221 as a simple table

n a(n)
1 1
2 -2
3 -180
4 2808000
5 63248290560000
6 -13040516214928232110080000
7 -173699422048124050990739961787485511680000
8 1013027110717881203216509560866301885575342298295136595148800000

[1,-2,-180,2808000,63248290560000,
 -13040516214928232110080000,
 -173699422048124050990739961787485511680000,
 10130271107178812032165095608663018855753422982951\
 36595148800000]

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Last modified February 20 11:01 EST 2020. Contains 332073 sequences. (Running on oeis4.)