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!)

A180071 as a simple table

n a(n)
0 0
1 1
2 2
3 6
4 12
5 24
6 98
7 344
8 1236
9 5332
10 23772
11 110962
12 547714
13 2840028
14 15439466
15 87299850
16 512569668
17 3111575102
18 19577613014
19 127331688104

[0,1,2,6,12,24,98,344,1236,5332,23772,110962,
 547714,2840028,15439466,87299850,512569668,
 3111575102,19577613014,127331688104]

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 April 21 23:52 EDT 2021. Contains 343156 sequences. (Running on oeis4.)