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A198006
as a simple table
n
a(n)
1
1
2
4
3
33
4
328
5
7415
6
275014
7
18684018
8
2307507868
9
504270356235
[1,4,33,328,7415,275014,18684018,2307507868, 504270356235]
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Last modified March 28 11:46 EDT 2024. Contains 371241 sequences. (Running on oeis4.)