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A211374 as a simple table

n a(n)
1 1
2 1
3 2
4 12
5 24
6 360
7 720
8 20160
9 40320
10 1814400
11 3628800
12 239500800
13 479001600
14 43589145600
15 87178291200
16 10461394944000
17 20922789888000
18 3201186852864000
19 6402373705728000
20 1216451004088320000
21 2432902008176640000
22 562000363888803840000

[1,1,2,12,24,360,720,20160,40320,1814400,3628800,
 239500800,479001600,43589145600,87178291200,
 10461394944000,20922789888000,3201186852864000,
 6402373705728000,1216451004088320000,
 2432902008176640000,562000363888803840000]

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Last modified April 24 03:08 EDT 2024. Contains 371918 sequences. (Running on oeis4.)