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A272248 as a simple table

n a(n)
0 0
1 2
2 67584
3 7924375800
4 2876035930521600
5 2693451205324687500000
6 5648896640332217707816550400
7 23819277009290664033936067933468800
8 185754160490281505676324140907107450880000
9 2507604631016507710974687639612411760216253760000 

[0,2,67584,7924375800,2876035930521600,
 2693451205324687500000,
 5648896640332217707816550400,
 23819277009290664033936067933468800,
 185754160490281505676324140907107450880000,
 2507604631016507710974687639612411760216253760000]

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Last modified July 28 23:06 EDT 2024. Contains 374727 sequences. (Running on oeis4.)