login
This site is supported by donations to The OEIS Foundation.

 

Logo


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

A019580 as a simple table

n a(n)
4 1
5 20
6 375
7 7560
8 167825
9 4110120
10 110602800
11 3252075750
12 103881924300
13 3585467886000
14 133052005386300
15 5284678706307000
16 223761183682286250
17 10063370411081988000
18 479152851159102120000
19 24082014064135799772000

[1,20,375,7560,167825,4110120,110602800,
 3252075750,103881924300,3585467886000,
 133052005386300,5284678706307000,
 223761183682286250,10063370411081988000,
 479152851159102120000,24082014064135799772000]

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 22 04:25 EDT 2019. Contains 328315 sequences. (Running on oeis4.)