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A028858 as a simple table

n a(n)
2 1
3 3
4 9
5 44
6 235
7 1650
8 14502
9 163335
10 2360675
11 43944974

[1,3,9,44,235,1650,14502,163335,2360675,43944974]

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Last modified October 18 01:39 EDT 2021. Contains 348065 sequences. (Running on oeis4.)