(Translated by https://www.hiragana.jp/)
A111180 - OEIS
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A111180 as a simple table

n a(n)
0 1
1 2
2 12
3 1440
4 7257600
5 289700167680000
6 1803968969906847744000000
7 641649083271157094762019815424000000000
8 78053467161754909919949074014980107579424768000000000000 

[1,2,12,1440,7257600,289700167680000,
 1803968969906847744000000,
 641649083271157094762019815424000000000,
 78053467161754909919949074014980107579424768000000\
 000000]

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Last modified September 3 22:09 EDT 2024. Contains 375675 sequences. (Running on oeis4.)