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A119692 as a simple table

n a(n)
0 0
1 2
2 6
3 40
4 210
5 1260
6 7392
7 44616
8 270270
9 1653080
10 10161580
11 62783448
12 389398464
13 2423339800
14 15123958200
15 94621687200
16 593266344930
17 3726769133340
18 23450149615200
19 147778547947800
20 932531767467300
21 5891770693620240
22 37265696746444920
23 235945424360833200

[0,2,6,40,210,1260,7392,44616,270270,1653080,
 10161580,62783448,389398464,2423339800,
 15123958200,94621687200,593266344930,
 3726769133340,23450149615200,147778547947800,
 932531767467300,5891770693620240,
 37265696746444920,235945424360833200]

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Last modified September 1 09:45 EDT 2024. Contains 375584 sequences. (Running on oeis4.)