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A181485 as a simple table

n a(n)
1 1
2 4
3 112
4 144
5 23400
6 28224
7 247104
8 604800
9 26812800
10 2677752000
11 6805814400
12 165145780800
13 1248124550400
14 17996854730400
15 388778796252000 

[1,4,112,144,23400,28224,247104,604800,26812800,
 2677752000,6805814400,165145780800,1248124550400,
 17996854730400,388778796252000]

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Last modified April 25 13:24 EDT 2024. Contains 371971 sequences. (Running on oeis4.)