Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #4 Mar 31 2012 12:35:12
%S 1,1,1,1,1,1,5,17,43,65,175,507,1901,7015,35249,143079,849399,4342589,
%T 31597665,199056275,1767268871
%N Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1100-1111-1000 pattern in any orientation.
%e Maximal 8 X 8 example
%e .1.1.1.0.0.0.1.1
%e .1.1.0.0.1.1.1.1
%e .0.1.0.0.0.0.0.1
%e .0.1.0.0.0.0.0.0
%e .0.0.0.0.0.0.1.0
%e .1.0.0.0.0.0.1.0
%e .1.1.1.1.0.0.1.1
%e .1.1.0.0.0.1.1.1
%K nonn
%O 1,7
%A _R. H. Hardin_, Nov 04 2008