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A045977 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 24
5 120
6 720
7 5040
8 27720
9 166320
10 1940400
11 25225200
12 230630400
13 3920716800
14 16295479200
15 97772875200
16 321253732800
17 9316358251200
18 767582252236800
19 20724720810393600
20 303962571885772800

[1,1,2,6,24,120,720,5040,27720,166320,1940400,
 25225200,230630400,3920716800,16295479200,
 97772875200,321253732800,9316358251200,
 767582252236800,20724720810393600,
 303962571885772800]

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Last modified May 20 08:05 EDT 2024. Contains 372703 sequences. (Running on oeis4.)