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A126746
as a simple table
n
a(n)
1
0
2
0
3
0
4
1
5
3
6
25
7
266
8
4646
9
136935
10
7121703
11
647596643
[0,0,0,1,3,25,266,4646,136935,7121703,647596643]
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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)