The OEIS mourns the passing of
Jim Simons
and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A069402
Half the number of 9 X n binary arrays with a path of adjacent 1's and a path of adjacent 0's from top row to bottom row.
0
1, 8361, 22372413, 34777826197
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
2,2
LINKS
Table of n, a(n) for n=2..5.
CROSSREFS
Cf. 1 X n
A000225
, 2 X n
A016269
, vertical path of 1
A069361
-
A069395
, vertical paths of 0+1
A069396
-
A069416
, vertical path of 1 not 0
A069417
-
A069428
, no vertical paths
A069429
-
A069447
, no horizontal or vertical paths
A069448
-
A069452
.
Sequence in context:
A224465
A049357
A031947
*
A202588
A337959
A139005
Adjacent sequences:
A069399
A069400
A069401
*
A069403
A069404
A069405
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Mar 22 2002
STATUS
approved
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 June 9 20:03 EDT 2024. Contains 373248 sequences. (Running on oeis4.)