login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)

A280889 as a simple table

n a(n)
0 1
1 1
2 4
3 75
4 56
5 6930
6 28512
7 2849847
8 972400
9 693870606
10 99936200
11 63488350926
12 475814969280
13 166184959669300
14 497980728000
15 78877488833249175
16 1489333512849120
17 1116126129558913110
18 1597083864660900000
19 4467282986266589095530
20 107279471180408841600

[1,1,4,75,56,6930,28512,2849847,972400,693870606,
 99936200,63488350926,475814969280,166184959669300,
 497980728000,78877488833249175,1489333512849120,
 1116126129558913110,1597083864660900000,
 4467282986266589095530,107279471180408841600]

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)