Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #3 Mar 31 2012 12:35:09
%S 1,1,1,1,13,51,327,1743,13905,216443,3286293,80038799,2242888197,
%T 93345565591,4572631279405,334861611729305
%N Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 5-point barb 1,1 1,2 2,2 2,3 3,2 in any orientation.
%e Maximal 8 X 8 example
%e .0.1.1.0.0.0.1.0
%e .1.1.0.0.0.1.1.1
%e .0.1.0.0.1.0.0.1
%e .0.0.1.0.1.1.1.0
%e .0.1.1.1.0.1.0.0
%e .1.0.0.1.0.0.1.0
%e .1.1.1.0.0.0.1.1
%e .0.1.0.0.0.1.1.0
%K nonn
%O 1,5
%A _R. H. Hardin_, Oct 27 2008