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A189567 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 24
5 120
6 392
7 1810
8 10400
9 72228
10 589674
11 5196870
12 52398658
13 588036216
14 7274466172
15 98024173852
16 1427556373892 

[1,1,2,6,24,120,392,1810,10400,72228,589674,
 5196870,52398658,588036216,7274466172,98024173852,
 1427556373892]

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Last modified July 10 02:13 EDT 2024. Contains 374191 sequences. (Running on oeis4.)