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!)

A171874 as a simple table

n a(n)
0 0
1 0
2 0
3 1
4 1
5 2
6 4
7 7
8 16
9 46
10 174
11 3311
12 268446771
13 401906756202069927727330981 

[0,0,0,1,1,2,4,7,16,46,174,3311,268446771,
 401906756202069927727330981]

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 28 19:40 EDT 2024. Contains 372092 sequences. (Running on oeis4.)