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A137567
as a simple table
n
a(n)
1
0
2
0
3
0
4
4
5
18
6
115
7
905
8
11642
9
267398
10
11821562
[0,0,0,4,18,115,905,11642,267398,11821562]
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Last modified April 18 15:05 EDT 2024. Contains 371780 sequences. (Running on oeis4.)
