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!)

A026666 as a simple table

n a(n)
0 1
1 2
2 4
3 10
4 20
5 42
6 84
7 196
8 392
9 842
10 1684
11 3878
12 7756
13 16786
14 33572
15 76846
16 153692
17 333998
18 667996
19 1523448
20 3046896
21 6639150
22 13278300
23 30206468
24 60412936
25 131892226
26 263784452
27 598952096
28 1197904192
29 2619074230

[1,2,4,10,20,42,84,196,392,842,1684,3878,7756,
 16786,33572,76846,153692,333998,667996,1523448,
 3046896,6639150,13278300,30206468,60412936,
 131892226,263784452,598952096,1197904192,
 2619074230]

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 October 5 23:01 EDT 2022. Contains 357261 sequences. (Running on oeis4.)