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!)

A267227 as a simple table

n a(n)
1 4
2 16
3 54
4 176
5 564
6 1790
7 5646
8 17732
9 55512
10 173354
11 540258
12 1680848
13 5221740
14 16200758
15 50204790
16 155413724
17 480622848
18 1484980802
19 4584213642
20 14140323560
21 43583756436
22 134239102286
23 413179757214
24 1270924525556
25 3906925144104

[4,16,54,176,564,1790,5646,17732,55512,173354,
 540258,1680848,5221740,16200758,50204790,
 155413724,480622848,1484980802,4584213642,
 14140323560,43583756436,134239102286,413179757214,
 1270924525556,3906925144104]

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 March 28 13:42 EDT 2024. Contains 371254 sequences. (Running on oeis4.)