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A232663 as a simple table

n a(n)
1 1
2 1
3 2
4 12
5 48
6 280
7 2040
8 16632
9 139440
10 1404864
11 15405120
12 185361792
13 2380777344
14 33252800256
15 495338598144

[1,1,2,12,48,280,2040,16632,139440,1404864,
 15405120,185361792,2380777344,33252800256,
 495338598144]

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