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!)
A146688 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1100-1000-1111 pattern in any orientation. 0

%I #4 Mar 31 2012 12:35:11

%S 1,1,1,1,1,1,1,15,35,63,133,361,1225,3603,14173,68577,327107,1804859,

%T 9535581,56798795,377223653

%N Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1100-1000-1111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .1.1.0.0.0.1.1.1

%e .1.0.0.0.0.1.0.1

%e .1.1.1.1.0.1.0.0

%e .0.0.0.0.0.1.0.0

%e .0.0.1.0.0.0.0.0

%e .0.0.1.0.1.1.1.1

%e .1.0.1.0.0.0.0.1

%e .1.1.1.0.0.0.1.1

%K nonn

%O 1,8

%A _R. H. Hardin_, Nov 04 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 August 26 02:15 EDT 2024. Contains 375454 sequences. (Running on oeis4.)