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!)
A147236 Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1101-0111-0001 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 7, 7, 19, 19, 49, 49, 195, 195, 1111, 1111 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,11
LINKS
EXAMPLE
Maximal 11 X 11 example
.0.0.1.1.1.0.1.1.1.0.0
.0.0.0.1.0.0.0.1.0.0.0
.1.0.0.1.1.0.1.1.0.0.1
.1.1.1.0.1.0.1.0.1.1.1
.1.0.1.1.0.0.0.1.1.0.1
.0.0.0.0.0.0.0.0.0.0.0
.1.0.1.1.0.0.0.1.1.0.1
.1.1.1.0.1.0.1.0.1.1.1
.1.0.0.1.1.0.1.1.0.0.1
.0.0.0.1.0.0.0.1.0.0.0
.0.0.1.1.1.0.1.1.1.0.0
CROSSREFS
Sequence in context: A146687 A146655 A146812 * A146599 A107222 A050613
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 March 29 06:34 EDT 2024. Contains 371265 sequences. (Running on oeis4.)