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A357664 as a simple table

n a(n)
0 0
1 1
2 2
3 6
4 32
5 220
6 1592
7 11944
8 96000
9 847120
10 8209952
11 86020704
12 958326272
13 11243157952
14 138464594816
15 1789358629504
16 24250275913728
17 344002396594432
18 5092763802452480
19 78443316497892864
20 1253887341918199808
21 20761127890765634560

[0,1,2,6,32,220,1592,11944,96000,847120,8209952,
 86020704,958326272,11243157952,138464594816,
 1789358629504,24250275913728,344002396594432,
 5092763802452480,78443316497892864,
 1253887341918199808,20761127890765634560]

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Last modified May 12 14:10 EDT 2024. Contains 372480 sequences. (Running on oeis4.)