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

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A049749 a(n)=Sum{((-1)^i)*T(i,2n-i): i=0,1,...,2n}, array T as in A049747. 0
0, 3, 9, 19, 33, 53, 59, 101, 109, 141, 211, 235, 275, 315, 353, 435, 511, 543 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..17.

CROSSREFS

Sequence in context: A226184 A066506 A058331 * A147055 A146638 A147135

Adjacent sequences:  A049746 A049747 A049748 * A049750 A049751 A049752

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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

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

Last modified December 19 10:53 EST 2014. Contains 252208 sequences.