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A069257 as a simple table

n a(n)
2 6
3 20
4 57960
5 3145940416080
6 5765760
7 288680192354725622464710969631440008928
8 20484953806009937929429725901717124022833778640
9 59553628273094395440
10 102119994931499628863688098762720537989600

[6,20,57960,3145940416080,5765760,
 288680192354725622464710969631440008928,
 20484953806009937929429725901717124022833778640,
 59553628273094395440,
 102119994931499628863688098762720537989600]

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Last modified May 7 16:00 EDT 2021. Contains 343652 sequences. (Running on oeis4.)