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A005430 as a simple table

n a(n)
0 0
1 2
2 12
3 60
4 280
5 1260
6 5544
7 24024
8 102960
9 437580
10 1847560
11 7759752
12 32449872
13 135207800
14 561632400
15 2326762800
16 9617286240
17 39671305740
18 163352435400
19 671560012200
20 2756930576400
21 11303415363240
22 46290177201840
23 189368906734800
24 773942488394400

[0,2,12,60,280,1260,5544,24024,102960,437580,
 1847560,7759752,32449872,135207800,561632400,
 2326762800,9617286240,39671305740,163352435400,
 671560012200,2756930576400,11303415363240,
 46290177201840,189368906734800,773942488394400]

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)