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A093647 as a simple table

n a(n)
0 1
1 2
2 20
3 130
4 4000
5 34385
6 127658
7 154375
8 338143
9 1462240
10 22936888
11 104087491
12 756449941
13 1252467550
14 3953591108800
15 110329835126080
16 112834800815577880
17 149099873130116779
18 26141903882328110417

[1,2,20,130,4000,34385,127658,154375,338143,
 1462240,22936888,104087491,756449941,1252467550,
 3953591108800,110329835126080,112834800815577880,
 149099873130116779,26141903882328110417]

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Last modified April 15 08:18 EDT 2021. Contains 342977 sequences. (Running on oeis4.)