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!)

A018999 as a simple table

n a(n)
2 3
3 12
4 10
5 50
6 306
7 1788
8 9420
9 54166
10 320796
11 1915104
12 11251252
13 65388276
14 380648010
15 2245338222
16 13485086750 

[3,12,10,50,306,1788,9420,54166,320796,1915104,
 11251252,65388276,380648010,2245338222,
 13485086750]

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 April 23 09:22 EDT 2024. Contains 371905 sequences. (Running on oeis4.)