%I #3 Mar 31 2012 12:35:08
%S 1,1,5,5,24,73,566,2483,32841,234437,5307036,61459976,2279718182,
%T 44700555075,2739362168120,88170556642974,8988213154883058
%N Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only either three adjacent vertically or three adjacent horizontally.
%K nonn
%O 1,3
%A _R. H. Hardin_, Oct 17 2008