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A084399
as a simple table
n
a(n)
1
0
2
2
3
22
4
140
5
680
6
2800
7
10304
8
34944
9
111360
10
337920
11
985600
12
2782208
13
7641088
[0,2,22,140,680,2800,10304,34944,111360,337920, 985600,2782208,7641088]
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Last modified September 18 17:07 EDT 2024. Contains 376002 sequences. (Running on oeis4.)
