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A203430 as a simple table

n a(n)
1 1
2 2
3 6
4 180
5 12960
6 18662400
7 84652646400
8 12068081270784000
9 6568897997313146880000
10 157325632547489652827750400000
11 16698920220108665726304214056960000000
12 101984821172231138973752227905335721984000000000 

[1,2,6,180,12960,18662400,84652646400,
 12068081270784000,6568897997313146880000,
 157325632547489652827750400000,
 16698920220108665726304214056960000000,
 101984821172231138973752227905335721984000000000]

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Last modified August 18 17:05 EDT 2024. Contains 375269 sequences. (Running on oeis4.)