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!)

A131357 as a simple table

n a(n)
1 1
2 2
3 9
4 24
5 54
6 120
7 248
8 500
9 1004
10 2016
11 4038
12 8082
13 16170
14 32346
15 64700
16 129404
17 258812
18 517644
19 1035294
20 2070594
21 4141194
22 8282394
23 16564800
24 33129608
25 66259220
26 132518444
27 265036896
28 530073798
29 1060147602
30 2120295210
31 4240590426
32 8481180858
33 16962361722
34 33924723450
35 67849446906
36 135698893818

[1,2,9,24,54,120,248,500,1004,2016,4038,8082,
 16170,32346,64700,129404,258812,517644,1035294,
 2070594,4141194,8282394,16564800,33129608,
 66259220,132518444,265036896,530073798,1060147602,
 2120295210,4240590426,8481180858,16962361722,
 33924723450,67849446906,135698893818]

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 24 06:07 EDT 2024. Contains 371918 sequences. (Running on oeis4.)