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A252786
as a simple table
n
a(n)
0
0
1
0
2
1
3
3
4
7
5
26
6
117
7
6851
8
85249444
9
39565495603665
10
40261075301026166295207
[0,0,1,3,7,26,117,6851,85249444,39565495603665, 40261075301026166295207]
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Last modified April 17 15:33 EDT 2024. Contains 371764 sequences. (Running on oeis4.)