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A157586 as a simple table

n a(n)
2 1
3 3
4 162
5 16410
6 1839645
7 210928977
8 17676193171
9 1148671947972
10 71262995700540
11 4352863891098140
12 258238261126722129
13 14806140740844716211
14 815211282605034375060
15 42951699550186642926270
16 2166061193994862365099390

[1,3,162,16410,1839645,210928977,17676193171,
 1148671947972,71262995700540,4352863891098140,
 258238261126722129,14806140740844716211,
 815211282605034375060,42951699550186642926270,
 2166061193994862365099390]

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Last modified August 16 12:15 EDT 2022. Contains 356168 sequences. (Running on oeis4.)