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!)

A001411 as a simple table

n a(n)
0 1
1 4
2 12
3 36
4 100
5 284
6 780
7 2172
8 5916
9 16268
10 44100
11 120292
12 324932
13 881500
14 2374444
15 6416596
16 17245332
17 46466676
18 124658732
19 335116620
20 897697164
21 2408806028
22 6444560484
23 17266613812
24 46146397316
25 123481354908
26 329712786220
27 881317491628

[1,4,12,36,100,284,780,2172,5916,16268,44100,
 120292,324932,881500,2374444,6416596,17245332,
 46466676,124658732,335116620,897697164,2408806028,
 6444560484,17266613812,46146397316,123481354908,
 329712786220,881317491628]

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 April 25 09:38 EDT 2024. Contains 371967 sequences. (Running on oeis4.)