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A177289 as a simple table

n a(n)
1 1
2 6
3 90
4 2520
5 113400
6 7484400
7 681080400
8 81729648000
9 12504636144000
10 1522786801536000
11 152883132197796000 

[1,6,90,2520,113400,7484400,681080400,81729648000,
 12504636144000,1522786801536000,
 152883132197796000]

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)