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!)

A002989 as a simple table

n a(n)
0 1
1 1
2 1
3 1
4 1
5 2
6 4
7 7
8 14
9 28
10 61
11 131
12 297
13 678
14 1592
15 3770
16 9096
17 22121
18 54451
19 135021
20 337651
21 849698
22 2152048
23 5479408
24 14022947
25 36048514
26 93061268
27 241160180
28 627179689
29 1636448181
30 4282964600
31 11241488853
32 29584389474

[1,1,1,1,1,2,4,7,14,28,61,131,297,678,1592,3770,
 9096,22121,54451,135021,337651,849698,2152048,
 5479408,14022947,36048514,93061268,241160180,
 627179689,1636448181,4282964600,11241488853,
 29584389474]

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 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)