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!)
A147504 Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1110-0110-0111 pattern in any orientation. 0

%I

%S 1,1,1,1,1,5,21,83,317,1047,4695,28979,194029,1669287,18050319

%N Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1110-0110-0111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .1.1.1.0.0.0.0.0

%e .0.1.1.0.0.1.0.0

%e .0.1.1.1.0.1.1.1

%e .1.0.0.0.0.1.1.1

%e .1.1.1.0.0.0.0.1

%e .1.1.1.0.1.1.1.0

%e .0.0.1.0.0.1.1.0

%e .0.0.0.0.0.1.1.1

%K nonn

%O 1,6

%A _R. H. Hardin_

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 August 10 22:36 EDT 2022. Contains 356046 sequences. (Running on oeis4.)