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A197923
as a simple table
n
a(n)
1
1
2
4
3
22
4
177
5
5738
6
160173
7
13351462
8
1939178408
9
480290035535
[1,4,22,177,5738,160173,13351462,1939178408, 480290035535]
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Last modified May 25 19:19 EDT 2022. Contains 354071 sequences. (Running on oeis4.)