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A052849 as a simple table

n a(n)
0 0
1 2
2 4
3 12
4 48
5 240
6 1440
7 10080
8 80640
9 725760
10 7257600
11 79833600
12 958003200
13 12454041600
14 174356582400
15 2615348736000
16 41845579776000
17 711374856192000
18 12804747411456000
19 243290200817664000
20 4865804016353280000
21 102181884343418880000
22 2248001455555215360000

[0,2,4,12,48,240,1440,10080,80640,725760,7257600,
 79833600,958003200,12454041600,174356582400,
 2615348736000,41845579776000,711374856192000,
 12804747411456000,243290200817664000,
 4865804016353280000,102181884343418880000,
 2248001455555215360000]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)