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A248838 as a simple table

n a(n)
1 2
2 6
3 24
4 120
5 718
6 4994
7 39556
8 351320
9 3456742
10 37314126
11 438366374
12 5567209930
13 75995663398
14 1109556555434
15 17252609166736
16 284620418911180
17 4965138989585412
18 91317809653363376
19 1765937111915469414

[2,6,24,120,718,4994,39556,351320,3456742,
 37314126,438366374,5567209930,75995663398,
 1109556555434,17252609166736,284620418911180,
 4965138989585412,91317809653363376,
 1765937111915469414]

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Last modified February 4 07:13 EST 2023. Contains 360046 sequences. (Running on oeis4.)