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A209052
as a simple table
n
a(n)
1
2
2
13
3
115
4
1468
5
22738
6
415695
7
7893620
8
136638297
9
2269919266
[2,13,115,1468,22738,415695,7893620,136638297, 2269919266]
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Last modified May 8 18:04 EDT 2024. Contains 372340 sequences. (Running on oeis4.)
