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A032125 as a simple table

n a(n)
1 3
2 9
3 30
4 108
5 408
6 1584
7 6240
8 24768
9 98688
10 393984
11 1574400
12 6294528
13 25171968
14 100675584
15 402677760
16 1610661888
17 6442549248
18 25770000384
19 103079608320
20 412317646848
21 1649269014528
22 6597072912384
23 26388285358080
24 105553128849408

[3,9,30,108,408,1584,6240,24768,98688,393984,
 1574400,6294528,25171968,100675584,402677760,
 1610661888,6442549248,25770000384,103079608320,
 412317646848,1649269014528,6597072912384,
 26388285358080,105553128849408]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)