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A151803
as a simple table
n
a(n)
1
2
2
4
3
21
4
242
5
4027
6
87082
7
2381388
8
80218256
9
3251373408
10
155558286540
[2,4,21,242,4027,87082,2381388,80218256, 3251373408,155558286540]
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Last modified April 19 08:08 EDT 2024. Contains 371782 sequences. (Running on oeis4.)