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A172827 as a simple table

n a(n)
1 0
2 0
3 28681
4 2449665403360
5 4267335124853033521800
6 106107338700855492388229350341800
7 27866376170914402863794530315047399586447050 

[0,0,28681,2449665403360,4267335124853033521800,
 106107338700855492388229350341800,
 27866376170914402863794530315047399586447050]

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Last modified April 23 15:20 EDT 2024. Contains 371916 sequences. (Running on oeis4.)