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A068859 as a simple table

n a(n)
1 3
2 15
3 120
4 360
5 5040
6 201600
7 256032000
8 4064251968000
9 1024126980000259968000
10 29365589556381243259975904529351552000
11 82421263677202543043706796882184010324019881962069201381742720000

[3,15,120,360,5040,201600,256032000,4064251968000,
 1024126980000259968000,
 29365589556381243259975904529351552000,
 82421263677202543043706796882184010324019881962069\
 201381742720000]

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Last modified September 18 09:59 EDT 2019. Contains 327170 sequences. (Running on oeis4.)