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A189862 as a simple table

n a(n)
1 1
2 2
3 6
4 24
5 120
6 720
7 3720
8 22336
9 153796
10 1213344
11 10849504
12 108891704
13 1023690268
14 10593791168
15 119694887008
16 1472935989952

[1,2,6,24,120,720,3720,22336,153796,1213344,
 10849504,108891704,1023690268,10593791168,
 119694887008,1472935989952]

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Last modified July 20 04:18 EDT 2024. Contains 374441 sequences. (Running on oeis4.)