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!)

A290331 as a simple table

n a(n)
1 0
2 0
3 3
4 18
5 87
6 423
7 2340
8 15855
9 137160
10 1544121
11 22771791
12 443447013

[0,0,3,18,87,423,2340,15855,137160,1544121,
 22771791,443447013]

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 September 17 09:00 EDT 2021. Contains 347478 sequences. (Running on oeis4.)