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A157565 as a simple table

n a(n)
2 1
3 3
4 198
5 9310
6 376485
7 22631679
8 1141749532
9 52484724372
10 2266995222285
11 89935056097975
12 3267564223225962
13 110915350947910158
14 3617265650971040159
15 114705568549182973950
16 3535047653641613917560
17 105710505247924746059104

[1,3,198,9310,376485,22631679,1141749532,
 52484724372,2266995222285,89935056097975,
 3267564223225962,110915350947910158,
 3617265650971040159,114705568549182973950,
 3535047653641613917560,105710505247924746059104]

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Last modified August 12 16:32 EDT 2022. Contains 356077 sequences. (Running on oeis4.)