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A221791
as a simple table
n
a(n)
1
0
2
0
3
1
4
105
5
4131
6
109702
7
4781652
8
220782560
9
12043488477
10
578442771884
[0,0,1,105,4131,109702,4781652,220782560, 12043488477,578442771884]
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Last modified May 4 08:39 EDT 2024. Contains 372230 sequences. (Running on oeis4.)