login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)

A089893 as a simple table

n a(n)
0 0
1 1
2 4
3 21
4 64
5 321
6 1092
7 5461
8 16384
9 81921
10 278532
11 1392661
12 4210752
13 21053761
14 71582788
15 357913941
16 1073741824
17 5368709121
18 18253611012
19 91268055061
20 275951648832
21 1379758244161
22 4691178030148
23 23455890150741

[0,1,4,21,64,321,1092,5461,16384,81921,278532,
 1392661,4210752,21053761,71582788,357913941,
 1073741824,5368709121,18253611012,91268055061,
 275951648832,1379758244161,4691178030148,
 23455890150741]

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified December 10 19:26 EST 2016. Contains 279006 sequences.