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!)

A128634 as a simple table

n a(n)
1 0
2 2
3 8
4 26
5 82
6 262
7 856
8 2858
9 9722
10 33590
11 117570
12 416022
13 1485798
14 5348878
15 19389688
16 70715338
17 259289578
18 955277398
19 3534526378
20 13128240838
21 48932534038
22 182965127278
23 686119227298
24 2579808294646
25 9723892802902
26 36734706144302
27 139067101832006
28 527495903500718

[0,2,8,26,82,262,856,2858,9722,33590,117570,
 416022,1485798,5348878,19389688,70715338,
 259289578,955277398,3534526378,13128240838,
 48932534038,182965127278,686119227298,
 2579808294646,9723892802902,36734706144302,
 139067101832006,527495903500718]

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 August 7 13:12 EDT 2024. Contains 375013 sequences. (Running on oeis4.)