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A247211
as a simple table
n
a(n)
0
0
1
0
2
2
3
6
4
23
5
80
6
302
7
1160
8
4504
9
17087
10
66327
[0,0,2,6,23,80,302,1160,4504,17087,66327]
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Last modified September 19 23:07 EDT 2024. Contains 376015 sequences. (Running on oeis4.)
