login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


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

A161887 as a simple table

n a(n)
1 1
2 2
3 6
4 12
5 60
6 120
7 840
8 7560
9 15120
10 110880
11 166320
12 1441440
13 2882880
14 10810800
15 43243200
16 183783600
17 367567200
18 2793510720
19 6983776800
20 58663725120
21 117327450240
22 299836817280
23 2698531355520
24 7495920432000

[1,2,6,12,60,120,840,7560,15120,110880,166320,
 1441440,2882880,10810800,43243200,183783600,
 367567200,2793510720,6983776800,58663725120,
 117327450240,299836817280,2698531355520,
 7495920432000]

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 July 31 16:38 EDT 2021. Contains 346376 sequences. (Running on oeis4.)