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A218308 as a simple table

n a(n)
0 1
1 3
2 42
3 1116
4 44616
5 2394288
6 161719200
7 13187258304
8 1261037553792
9 138415816348416
10 17155627044653568
11 2370099000682257408
12 361171910376568571904
13 60185513513709805350912
14 10887989148395358662270976
15 2125192867898778619536457728

[1,3,42,1116,44616,2394288,161719200,13187258304,
 1261037553792,138415816348416,17155627044653568,
 2370099000682257408,361171910376568571904,
 60185513513709805350912,
 10887989148395358662270976,
 2125192867898778619536457728]

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Last modified April 24 06:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)