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A221772
as a simple table
n
a(n)
1
55
2
18828
3
6916881
4
2541024755
5
932759231192
6
342291992210642
7
125598125432396157
[55,18828,6916881,2541024755,932759231192, 342291992210642,125598125432396157]
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Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)