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A270519 as a simple table

n a(n)
1 3
2 7
3 18
4 217
5 21586
6 132830816
7 8232750479147118
8 8738244742575919521189548340591
9 28575128242342620144630216663972970082807062570299713849045286 

[3,7,18,217,21586,132830816,8232750479147118,
 8738244742575919521189548340591,
 28575128242342620144630216663972970082807062570299\
 713849045286]

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)