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A052660 as a simple table

n a(n)
0 2
1 2
2 6
3 24
4 144
5 1080
6 10080
7 110880
8 1411200
9 20321280
10 326592000
11 5787936000
12 112086374400
13 2353813862400
14 53265935923200
15 1291982275584000
16 33434618241024000
17 919452001628160000

[2,2,6,24,144,1080,10080,110880,1411200,20321280,
 326592000,5787936000,112086374400,2353813862400,
 53265935923200,1291982275584000,33434618241024000,
 919452001628160000]

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Last modified May 9 10:59 EDT 2024. Contains 372350 sequences. (Running on oeis4.)