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A028367 as a simple table

n a(n)
1 1
2 2
3 720
4 87178291200
5 265252859812191058636308480000000
6 31469973260387937525653122354950764088012280797258232192163168247821107200000000000000 

[1,2,720,87178291200,
 265252859812191058636308480000000,
 31469973260387937525653122354950764088012280797258\
 232192163168247821107200000000000000]

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Last modified April 18 11:52 EDT 2024. Contains 371779 sequences. (Running on oeis4.)