login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

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

A072171 as a simple table

n a(n)
-1 2
0 6
1 14
2 71
3 190
4 610
5 1929
6 5946
7 17765
8 51094
9 140062
10 409194
11 1196690
12 3481113
13 10126390
14 29457184
15 85689537
16 249266759
17 725105060
18 2109295881
19 6135840666
20 17848866544

[2,6,14,71,190,610,1929,5946,17765,51094,140062,
 409194,1196690,3481113,10126390,29457184,85689537,
 249266759,725105060,2109295881,6135840666,
 17848866544]

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified December 21 02:15 EST 2014. Contains 252291 sequences.