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!)
A146182 Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 110-111-100 pattern in any orientation. 0

%I #4 Mar 31 2012 12:35:09

%S 1,1,1,1,1,1,9,9,33,33,113,113,1711,1711,59971,59971,1694043,1694043,

%T 74822217,74822217,7821008273,7821008273,1319866139817,1319866139817

%N Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 110-111-100 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.1.0.0.0.0.1.0

%e .1.1.0.0.0.0.1.1

%e .1.1.1.0.0.1.1.1

%e .0.0.0.0.0.0.0.0

%e .0.0.0.0.0.0.0.0

%e .1.1.1.0.0.1.1.1

%e .1.1.0.0.0.0.1.1

%e .0.1.0.0.0.0.1.0

%K nonn

%O 1,7

%A _R. H. Hardin_, Oct 27 2008

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 April 30 12:15 EDT 2024. Contains 372134 sequences. (Running on oeis4.)