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A172622 as a simple table

n a(n)
1 0
2 1
3 21
4 2371
5 628080
6 342829125
7 344827336455
8 589985590963930
9 1614966163545077280
10 6736902064011471514050
11 41169485539316907099731250
12 356683733303639928299266819050
13 4261817244676586430350506540348800 

[0,1,21,2371,628080,342829125,344827336455,
 589985590963930,1614966163545077280,
 6736902064011471514050,41169485539316907099731250,
 356683733303639928299266819050,
 4261817244676586430350506540348800]

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Last modified May 6 22:59 EDT 2024. Contains 372297 sequences. (Running on oeis4.)