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A121075
as a simple table
n
a(n)
0
0
1
0
2
1
3
10
4
47
5
221
6
970
7
4241
8
18294
[0,0,1,10,47,221,970,4241,18294]
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Last modified July 28 15:17 EDT 2024. Contains 374698 sequences. (Running on oeis4.)
