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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A168056 Expansion of (1+2x^2+x^3)/((1-x)^2*(1+x+x^2)). 4
1, 1, 3, 5, 5, 7, 9, 9, 11, 13, 13, 15, 17, 17, 19, 21, 21, 23, 25, 25, 27, 29, 29, 31, 33, 33, 35, 37, 37, 39, 41, 41, 43, 45, 45, 47, 49, 49, 51, 53, 53, 55, 57, 57, 59, 61, 61, 63, 65, 65, 67, 69, 69, 71, 73, 73, 75, 77, 77, 79, 81, 81, 83, 85, 85, 87, 89, 89, 91, 93, 93 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..70.

FORMULA

a(n)=A168057(n)/2^n.

CROSSREFS

Cf. A168053.

Sequence in context: A131421 A088743 A219844 * A122800 A063202 A058020

Adjacent sequences:  A168053 A168054 A168055 * A168057 A168058 A168059

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Nov 17 2009

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified May 25 17:58 EDT 2013. Contains 225647 sequences.