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A001661
as a simple table
n
a(n)
2
128
3
12758
4
5134240
5
67898771
6
11146309947
7
766834015734
8
4968618780985762
[128,12758,5134240,67898771,11146309947, 766834015734,4968618780985762]
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Last modified June 26 14:29 EDT 2024. Contains 373718 sequences. (Running on oeis4.)
