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!)
A146194 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 101-111-100 pattern in any orientation. 0

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

%S 1,1,1,1,1,1,13,33,61,131,505,1541,6387,29305,198459,1139657,7455433,

%T 47764793,415936701,3457440839,39284046163,428565300485,6364187322071

%N Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 101-111-100 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.0.0.0.0.1.0

%e .1.1.1.0.1.1.1.0

%e .0.1.0.0.1.0.1.0

%e .0.1.1.0.0.0.0.0

%e .0.0.0.0.0.1.1.0

%e .0.1.0.1.0.0.1.0

%e .0.1.1.1.0.1.1.1

%e .0.1.0.0.0.0.0.0

%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 May 4 20:54 EDT 2024. Contains 372257 sequences. (Running on oeis4.)