The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #4 Mar 31 2012 12:35:14
%S 1,1,1,1,1,9,41,249,1137,4177,27849,254297,2360945,31718257,561884345,
%T 12949529033,316511614977
%N Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1110-0100-0111 pattern in any orientation.
%e Maximal 8 X 8 example
%e .0.0.0.0.0.1.0.0
%e .1.1.1.0.0.1.1.1
%e .0.1.0.0.0.1.0.1
%e .0.1.1.1.0.0.0.1
%e .1.0.0.0.1.1.1.0
%e .1.0.1.0.0.0.1.0
%e .1.1.1.0.0.1.1.1
%e .0.0.1.0.0.0.0.0
%K nonn
%O 1,6
%A _R. H. Hardin_, Nov 04 2008