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A109618
as a simple table
n
a(n)
1
0
2
0
3
0
4
2
5
8
6
56
7
482
8
6374
9
116980
10
3089024
11
115321068
12
6150672392
[0,0,0,2,8,56,482,6374,116980,3089024,115321068, 6150672392]
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Last modified May 3 02:00 EDT 2024. Contains 372203 sequences. (Running on oeis4.)