|
%I #4 Mar 31 2012 12:35:10
%S 1,1,1,1,1,1,5,9,24,33,92,207,751,1987,9135,27247,151575,553091,
%T 3687021,16183258,127736835,672115551,6393532548,40630854716,
%U 467493592708
%N Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1000-1111-1000 pattern in any orientation.
%e Maximal 8 X 8 example
%e .0.1.1.1.0.0.0.0
%e .0.0.1.0.0.0.0.1
%e .0.0.1.0.1.1.1.1
%e .0.0.1.0.0.0.0.1
%e .1.0.0.0.0.1.0.0
%e .1.1.1.1.0.1.0.0
%e .1.0.0.0.0.1.0.0
%e .0.0.0.0.1.1.1.0
%K nonn
%O 1,7
%A _R. H. Hardin_
|
