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A172549 as a simple table

n a(n)
1 0
2 0
3 0
4 1
5 113400
6 154700988750
7 617944896216648000
8 6637298299496411164868250
9 176264656064665625137392456544800
10 10697695830125272790880922760946584535000 

[0,0,0,1,113400,154700988750,617944896216648000,
 6637298299496411164868250,
 176264656064665625137392456544800,
 10697695830125272790880922760946584535000]

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Last modified August 1 19:22 EDT 2024. Contains 374817 sequences. (Running on oeis4.)