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A006608
as a simple table
n
a(n)
1
0
2
0
3
0
4
0
5
2
6
10
7
110
8
1722
9
51039
10
2560606
11
215331676
12
31067572481
[0,0,0,0,2,10,110,1722,51039,2560606,215331676, 31067572481]
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Last modified September 21 02:31 EDT 2024. Contains 376079 sequences. (Running on oeis4.)