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A189256 as a simple table

n a(n)
1 1
2 2
3 6
4 24
5 120
6 672
7 4128
8 28992
9 231936
10 2088960
11 20434944
12 221871360
13 2645370624
14 34344038400
15 482103767040
16 7269498483456
17 117240911729664
18 2013265377314688
19 36665783917283328
20 705762463906133760
21 14313891805008665856

[1,2,6,24,120,672,4128,28992,231936,2088960,
 20434944,221871360,2645370624,34344038400,
 482103767040,7269498483456,117240911729664,
 2013265377314688,36665783917283328,
 705762463906133760,14313891805008665856]

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Last modified April 25 04:42 EDT 2024. Contains 371964 sequences. (Running on oeis4.)