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.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A147326 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 00100-00100-11111-00100 pattern in any orientation. 0

%I #4 Mar 31 2012 12:35:16

%S 1,1,1,1,5,1,9,1,54,15,1010,305,26482,3993,1090248,85931,79078189,

%T 4847983,11622838412,605747926,3166762458310,124132744693,

%U 1523768055043582,41573048881668

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 00100-00100-11111-00100 pattern in any orientation.

%e Maximal 9 X 9 example

%e .0.0.0.0.1.0.0.0.0

%e .0.0.1.1.1.1.1.0.0

%e .0.1.0.0.1.0.0.1.0

%e .0.1.0.0.1.0.0.1.0

%e .1.1.1.1.0.1.1.1.1

%e .0.1.0.0.1.0.0.1.0

%e .0.1.0.0.1.0.0.1.0

%e .0.0.1.1.1.1.1.0.0

%e .0.0.0.0.1.0.0.0.0

%K nonn

%O 1,5

%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 May 15 07:58 EDT 2024. Contains 372538 sequences. (Running on oeis4.)