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A188811
as a simple table
n
a(n)
1
2
2
20
3
448
4
25904
5
2952608
6
596917696
7
194286402560
[2,20,448,25904,2952608,596917696,194286402560]
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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)