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A124264 as a simple table

n a(n)
1 2
2 5
3 20
4 51
5 312
6 740
7 15000
8 34125
9 160720
10 4988592
11 180774720
12 844074000
13 27991656000
14 66264953040 

[2,5,20,51,312,740,15000,34125,160720,4988592,
 180774720,844074000,27991656000,66264953040]

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Last modified June 6 03:09 EDT 2023. Contains 363138 sequences. (Running on oeis4.)