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A202859
as a simple table
n
a(n)
1
4
2
12
3
228
4
41852
5
80524892
6
1720483641156
[4,12,228,41852,80524892,1720483641156]
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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)