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!)

A018038 as a simple table

n a(n)
0 1
1 3
2 8
3 21
4 58
5 160
6 441
7 1217
8 3357
9 9261
10 25551
11 70492
12 194481
13 536559
14 1480324
15 4084101
16 11267725
17 31086799
18 85766121
19 236622225
20 652822777
21 1801088541
22 4969066720
23 13709278307
24 37822859361
25 104350401111
26 287894844441
27 794280046581
28 2191358423330

[1,3,8,21,58,160,441,1217,3357,9261,25551,70492,
 194481,536559,1480324,4084101,11267725,31086799,
 85766121,236622225,652822777,1801088541,
 4969066720,13709278307,37822859361,104350401111,
 287894844441,794280046581,2191358423330]

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 May 4 21:32 EDT 2024. Contains 372257 sequences. (Running on oeis4.)