Greetings from
The On-Line Encyclopedia of Integer Sequences
!
Hints
Search:
id:A085139
Displaying 1-1 of 1 results found.
page 1
Format:
long
| short |
internal
|
text
Sort: relevance |
references
|
number
Highlight: on |
off
A085139
a(0)=1, for n>0: a(n)=(1/2) Sum( Sum( a(j)a(i-j), (j=0..i)) (1+(-1)^(n+1+i)), (i=0..n)).
+0
1
1, 1, 2, 6, 18, 58, 194, 670, 2370, 8546, 31298, 116102, 435346, 1647418, 6283394, 24130174, 93226242, 362098050, 1413098370, 5538138182, 21788069266, 86016385274, 340655956802, 1353023683486, 5388230857538, 21510345134178
(
list
;
graph
;
listen
)
page 1
Search completed in 0.001 seconds
Lookup
|
Welcome
|
Find friends
|
Music
|
Plot 2
|
Demos
|
Index
|
Browse
|
More
|
WebCam
Contribute new seq. or comment
|
Format
|
Transforms
|
Puzzles
|
Hot
|
Classics
More pages
|
Superseeker
|
Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 16 17:18 EST 2009. Contains 170825 sequences.
AT&T Labs Research
Legal Notice
© 2009 AT&T Intellectual Property.
All Rights Reserved.
