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A202161
as a simple table
n
a(n)
1
0
2
0
3
55
4
11710
5
3903255
6
3063974013
7
6430557449984
[0,0,55,11710,3903255,3063974013,6430557449984]
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Last modified August 23 21:15 EDT 2024. Contains 375396 sequences. (Running on oeis4.)