login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A147209 Number of n X n binary arrays with all ones connected only in a 1100-0111-0011 pattern in any orientation. 0
1, 1, 1, 17, 57, 405, 4805, 131407, 3796773, 159419173, 11442459321, 1404806567709 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Maximal 8 X 8 example

.0.0.1.1.0.1.1.0

.1.1.1.0.0.1.1.0

.1.1.0.0.0.0.1.1

.0.0.1.0.1.1.0.1

.0.1.1.0.1.1.0.0

.1.1.0.1.1.0.1.1

.1.1.0.1.0.1.1.1

.0.0.0.0.1.1.0.0

CROSSREFS

Sequence in context: A146437 A146783 A146570 * A147239 A264473 A146578

Adjacent sequences:  A147206 A147207 A147208 * A147210 A147211 A147212

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

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 October 6 08:17 EDT 2022. Contains 357263 sequences. (Running on oeis4.)